diff --git a/.settings.xml b/.settings.xml
index 6c35512..08951ca 100644
--- a/.settings.xml
+++ b/.settings.xml
@@ -21,7 +21,7 @@
 		<repository>
 			<id>spring-snapshots</id>
 			<name>Spring Snapshots</name>
-			<url>http://repo.spring.io/libs-snapshot-local</url>
+			<url>https://repo.spring.io/libs-snapshot-local</url>
 			<snapshots>
 				<enabled>true</enabled>
 			</snapshots>
@@ -29,7 +29,7 @@
 		<repository>
 			<id>spring-milestones</id>
 			<name>Spring Milestones</name>
-			<url>http://repo.spring.io/libs-milestone-local</url>
+			<url>https://repo.spring.io/libs-milestone-local</url>
 			<snapshots>
 				<enabled>false</enabled>
 			</snapshots>
@@ -37,7 +37,7 @@
 		<repository>
 			<id>spring-releases</id>
 			<name>Spring Releases</name>
-			<url>http://repo.spring.io/release</url>
+			<url>https://repo.spring.io/release</url>
 			<snapshots>
 				<enabled>false</enabled>
 			</snapshots>
@@ -47,7 +47,7 @@
 		<pluginRepository>
 			<id>spring-snapshots</id>
 			<name>Spring Snapshots</name>
-			<url>http://repo.spring.io/libs-snapshot-local</url>
+			<url>https://repo.spring.io/libs-snapshot-local</url>
 			<snapshots>
 				<enabled>true</enabled>
 			</snapshots>
@@ -55,7 +55,7 @@
 		<pluginRepository>
 			<id>spring-milestones</id>
 			<name>Spring Milestones</name>
-			<url>http://repo.spring.io/libs-milestone-local</url>
+			<url>https://repo.spring.io/libs-milestone-local</url>
 			<snapshots>
 				<enabled>false</enabled>
 			</snapshots>
diff --git a/kafka-streams-samples/kafka-streams-aggregate/pom.xml b/kafka-streams-samples/kafka-streams-aggregate/pom.xml
index 94ad592..16ea1bc 100644
--- a/kafka-streams-samples/kafka-streams-aggregate/pom.xml
+++ b/kafka-streams-samples/kafka-streams-aggregate/pom.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
 	<modelVersion>4.0.0</modelVersion>
 
 	<artifactId>kafka-streams-aggregate</artifactId>
diff --git a/kafka-streams-samples/kafka-streams-branching/pom.xml b/kafka-streams-samples/kafka-streams-branching/pom.xml
index 9eb45f1..003c24c 100644
--- a/kafka-streams-samples/kafka-streams-branching/pom.xml
+++ b/kafka-streams-samples/kafka-streams-branching/pom.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
 	<modelVersion>4.0.0</modelVersion>
 
 	<artifactId>kafka-streams-branching</artifactId>
diff --git a/kafka-streams-samples/kafka-streams-dlq-sample/pom.xml b/kafka-streams-samples/kafka-streams-dlq-sample/pom.xml
index 9c5f2ed..75e1641 100644
--- a/kafka-streams-samples/kafka-streams-dlq-sample/pom.xml
+++ b/kafka-streams-samples/kafka-streams-dlq-sample/pom.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
 	<modelVersion>4.0.0</modelVersion>
 
 	<artifactId>kafka-streams-dlq-sample</artifactId>
diff --git a/kafka-streams-samples/kafka-streams-global-table-join/pom.xml b/kafka-streams-samples/kafka-streams-global-table-join/pom.xml
index 9202ff9..322e7d6 100644
--- a/kafka-streams-samples/kafka-streams-global-table-join/pom.xml
+++ b/kafka-streams-samples/kafka-streams-global-table-join/pom.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
 	<modelVersion>4.0.0</modelVersion>
 
 	<artifactId>kafka-streams-global-table-join</artifactId>
diff --git a/kafka-streams-samples/kafka-streams-interactive-query-advanced/pom.xml b/kafka-streams-samples/kafka-streams-interactive-query-advanced/pom.xml
index 857e920..a078b7c 100644
--- a/kafka-streams-samples/kafka-streams-interactive-query-advanced/pom.xml
+++ b/kafka-streams-samples/kafka-streams-interactive-query-advanced/pom.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
 	<modelVersion>4.0.0</modelVersion>
 
 	<artifactId>kafka-streams-interactive-query-advanced</artifactId>
@@ -87,7 +87,7 @@
 	<repositories>
 		<repository>
 			<id>confluent</id>
-			<url>http://packages.confluent.io/maven/</url>
+			<url>https://packages.confluent.io/maven/</url>
 		</repository>
 	</repositories>
 
diff --git a/kafka-streams-samples/kafka-streams-interactive-query-basic/pom.xml b/kafka-streams-samples/kafka-streams-interactive-query-basic/pom.xml
index 950a21e..71b81cb 100644
--- a/kafka-streams-samples/kafka-streams-interactive-query-basic/pom.xml
+++ b/kafka-streams-samples/kafka-streams-interactive-query-basic/pom.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
 	<modelVersion>4.0.0</modelVersion>
 
 	<artifactId>kafka-streams-interactive-query-basic</artifactId>
diff --git a/kafka-streams-samples/kafka-streams-message-channel/pom.xml b/kafka-streams-samples/kafka-streams-message-channel/pom.xml
index fa72141..1afabb6 100644
--- a/kafka-streams-samples/kafka-streams-message-channel/pom.xml
+++ b/kafka-streams-samples/kafka-streams-message-channel/pom.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
 	<modelVersion>4.0.0</modelVersion>
 
 	<artifactId>kafka-streams-message-channel</artifactId>
diff --git a/kafka-streams-samples/kafka-streams-product-tracker/pom.xml b/kafka-streams-samples/kafka-streams-product-tracker/pom.xml
index 8fa38e4..0e41689 100644
--- a/kafka-streams-samples/kafka-streams-product-tracker/pom.xml
+++ b/kafka-streams-samples/kafka-streams-product-tracker/pom.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-		 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+		 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
 	<modelVersion>4.0.0</modelVersion>
 
 	<artifactId>kafka-streams-product-tracker</artifactId>
diff --git a/kafka-streams-samples/kafka-streams-table-join/pom.xml b/kafka-streams-samples/kafka-streams-table-join/pom.xml
index 473c2f6..363a1eb 100644
--- a/kafka-streams-samples/kafka-streams-table-join/pom.xml
+++ b/kafka-streams-samples/kafka-streams-table-join/pom.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
 	<modelVersion>4.0.0</modelVersion>
 
 	<artifactId>kafka-streams-table-join</artifactId>
diff --git a/kafka-streams-samples/kafka-streams-to-rabbitmq-message-channel/pom.xml b/kafka-streams-samples/kafka-streams-to-rabbitmq-message-channel/pom.xml
index 9f503fa..7ad0b9f 100644
--- a/kafka-streams-samples/kafka-streams-to-rabbitmq-message-channel/pom.xml
+++ b/kafka-streams-samples/kafka-streams-to-rabbitmq-message-channel/pom.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
 	<modelVersion>4.0.0</modelVersion>
 
 	<artifactId>kafka-streams-to-rabbitmq-message-channel</artifactId>
diff --git a/kafka-streams-samples/kafka-streams-word-count/pom.xml b/kafka-streams-samples/kafka-streams-word-count/pom.xml
index e249bd1..60992fd 100644
--- a/kafka-streams-samples/kafka-streams-word-count/pom.xml
+++ b/kafka-streams-samples/kafka-streams-word-count/pom.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
 	<modelVersion>4.0.0</modelVersion>
 
 	<artifactId>kafka-streams-word-count</artifactId>
diff --git a/kafka-streams-samples/pom.xml b/kafka-streams-samples/pom.xml
index 6cfe119..a2acaa9 100644
--- a/kafka-streams-samples/pom.xml
+++ b/kafka-streams-samples/pom.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
     <groupId>io.spring.cloud.stream.sample</groupId>
     <artifactId>kafka-streams-samples</artifactId>
diff --git a/kinesis-samples/kinesis-produce-consume/pom.xml b/kinesis-samples/kinesis-produce-consume/pom.xml
index 60a9ab2..cd4b7a4 100644
--- a/kinesis-samples/kinesis-produce-consume/pom.xml
+++ b/kinesis-samples/kinesis-produce-consume/pom.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-		 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+		 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
 	<modelVersion>4.0.0</modelVersion>
 
 	<artifactId>kinesis-produce-consume</artifactId>
diff --git a/kinesis-samples/kinesis-to-webflux/pom.xml b/kinesis-samples/kinesis-to-webflux/pom.xml
index 8810238..5be9e20 100644
--- a/kinesis-samples/kinesis-to-webflux/pom.xml
+++ b/kinesis-samples/kinesis-to-webflux/pom.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project xmlns="http://maven.apache.org/POM/4.0.0"
 		 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-		 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+		 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
 
 	<modelVersion>4.0.0</modelVersion>
 
diff --git a/kinesis-samples/pom.xml b/kinesis-samples/pom.xml
index a5f2c1d..aa98a50 100644
--- a/kinesis-samples/pom.xml
+++ b/kinesis-samples/pom.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
     <groupId>io.spring.cloud.stream.sample</groupId>
     <artifactId>kinesis-samples</artifactId>
diff --git a/multi-io-samples/multi-io/pom.xml b/multi-io-samples/multi-io/pom.xml
index 8d37f96..80f9b3f 100644
--- a/multi-io-samples/multi-io/pom.xml
+++ b/multi-io-samples/multi-io/pom.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
 	<modelVersion>4.0.0</modelVersion>
 
 	<artifactId>multi-io</artifactId>
diff --git a/multi-io-samples/pom.xml b/multi-io-samples/pom.xml
index d1a3ab8..1d7c36b 100644
--- a/multi-io-samples/pom.xml
+++ b/multi-io-samples/pom.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
     <groupId>io.spring.cloud.stream.sample</groupId>
     <artifactId>multi-io-samples</artifactId>
diff --git a/multibinder-samples/kafka-multibinder-jaas/pom.xml b/multibinder-samples/kafka-multibinder-jaas/pom.xml
index 5453b83..71578d5 100644
--- a/multibinder-samples/kafka-multibinder-jaas/pom.xml
+++ b/multibinder-samples/kafka-multibinder-jaas/pom.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
 	<modelVersion>4.0.0</modelVersion>
 
 	<artifactId>kafka-multibinder-jaas</artifactId>
diff --git a/multibinder-samples/multibinder-kafka-rabbit/pom.xml b/multibinder-samples/multibinder-kafka-rabbit/pom.xml
index c6f4ef5..34d0360 100644
--- a/multibinder-samples/multibinder-kafka-rabbit/pom.xml
+++ b/multibinder-samples/multibinder-kafka-rabbit/pom.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
 	<modelVersion>4.0.0</modelVersion>
 
 	<artifactId>multibinder-kafka-rabbit</artifactId>
diff --git a/multibinder-samples/multibinder-kafka-streams/pom.xml b/multibinder-samples/multibinder-kafka-streams/pom.xml
index 77939b3..f556daa 100644
--- a/multibinder-samples/multibinder-kafka-streams/pom.xml
+++ b/multibinder-samples/multibinder-kafka-streams/pom.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
 	<modelVersion>4.0.0</modelVersion>
 
 	<artifactId>multibinder-kafka-streams</artifactId>
diff --git a/multibinder-samples/multibinder-two-kafka-clusters/pom.xml b/multibinder-samples/multibinder-two-kafka-clusters/pom.xml
index f0f33ad..b1a88d5 100644
--- a/multibinder-samples/multibinder-two-kafka-clusters/pom.xml
+++ b/multibinder-samples/multibinder-two-kafka-clusters/pom.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
 	<modelVersion>4.0.0</modelVersion>
 
 	<artifactId>multibinder-two-kafka-clusters</artifactId>
diff --git a/multibinder-samples/pom.xml b/multibinder-samples/pom.xml
index 0d98d62..52796cb 100644
--- a/multibinder-samples/pom.xml
+++ b/multibinder-samples/pom.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
     <groupId>io.spring.cloud.stream.sample</groupId>
     <artifactId>multibinder-samples</artifactId>
diff --git a/partitioning-samples/partitioning-consumer-sample-kafka/pom.xml b/partitioning-samples/partitioning-consumer-sample-kafka/pom.xml
index 4e36e7e..088e781 100644
--- a/partitioning-samples/partitioning-consumer-sample-kafka/pom.xml
+++ b/partitioning-samples/partitioning-consumer-sample-kafka/pom.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
 
     <artifactId>partitioning-consumer-sample-kafka</artifactId>
diff --git a/partitioning-samples/partitioning-consumer-sample-kafka/src/main/docker/assembly-kafka.xml b/partitioning-samples/partitioning-consumer-sample-kafka/src/main/docker/assembly-kafka.xml
index b12f7f6..044f57a 100644
--- a/partitioning-samples/partitioning-consumer-sample-kafka/src/main/docker/assembly-kafka.xml
+++ b/partitioning-samples/partitioning-consumer-sample-kafka/src/main/docker/assembly-kafka.xml
@@ -1,7 +1,7 @@
 <assembly
         xmlns="http://maven.apache.org/plugins/maven-assembly-plugin/assembly/1.1.2"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-        xsi:schemaLocation="http://maven.apache.org/plugins/maven-assembly-plugin/assembly/1.1.2 http://maven.apache.org/xsd/assembly-1.1.2.xsd">
+        xsi:schemaLocation="http://maven.apache.org/plugins/maven-assembly-plugin/assembly/1.1.2 https://maven.apache.org/xsd/assembly-1.1.2.xsd">
     <id>uppercase-transformer-kafka</id>
     <dependencySets>
         <dependencySet>
diff --git a/partitioning-samples/partitioning-consumer-sample-rabbit/pom.xml b/partitioning-samples/partitioning-consumer-sample-rabbit/pom.xml
index 8b2a8f7..42f39c5 100644
--- a/partitioning-samples/partitioning-consumer-sample-rabbit/pom.xml
+++ b/partitioning-samples/partitioning-consumer-sample-rabbit/pom.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
 
     <artifactId>partitioning-consumer-sample-rabbit</artifactId>
diff --git a/partitioning-samples/partitioning-consumer-sample-rabbit/src/main/docker/assembly-rabbit.xml b/partitioning-samples/partitioning-consumer-sample-rabbit/src/main/docker/assembly-rabbit.xml
index 3571fb0..4a6e788 100644
--- a/partitioning-samples/partitioning-consumer-sample-rabbit/src/main/docker/assembly-rabbit.xml
+++ b/partitioning-samples/partitioning-consumer-sample-rabbit/src/main/docker/assembly-rabbit.xml
@@ -1,7 +1,7 @@
 <assembly
         xmlns="http://maven.apache.org/plugins/maven-assembly-plugin/assembly/1.1.2"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-        xsi:schemaLocation="http://maven.apache.org/plugins/maven-assembly-plugin/assembly/1.1.2 http://maven.apache.org/xsd/assembly-1.1.2.xsd">
+        xsi:schemaLocation="http://maven.apache.org/plugins/maven-assembly-plugin/assembly/1.1.2 https://maven.apache.org/xsd/assembly-1.1.2.xsd">
     <id>uppercase-transformer-kafka</id>
     <dependencySets>
         <dependencySet>
diff --git a/partitioning-samples/partitioning-producer-sample/pom.xml b/partitioning-samples/partitioning-producer-sample/pom.xml
index ad0db86..7cf5d51 100644
--- a/partitioning-samples/partitioning-producer-sample/pom.xml
+++ b/partitioning-samples/partitioning-producer-sample/pom.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
 	<modelVersion>4.0.0</modelVersion>
 
 	<artifactId>partitioning-producer-sample</artifactId>
diff --git a/partitioning-samples/partitioning-producer-sample/src/main/docker/assembly-kafka.xml b/partitioning-samples/partitioning-producer-sample/src/main/docker/assembly-kafka.xml
index f69b331..18d8320 100644
--- a/partitioning-samples/partitioning-producer-sample/src/main/docker/assembly-kafka.xml
+++ b/partitioning-samples/partitioning-producer-sample/src/main/docker/assembly-kafka.xml
@@ -1,7 +1,7 @@
 <assembly
         xmlns="http://maven.apache.org/plugins/maven-assembly-plugin/assembly/1.1.2"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-        xsi:schemaLocation="http://maven.apache.org/plugins/maven-assembly-plugin/assembly/1.1.2 http://maven.apache.org/xsd/assembly-1.1.2.xsd">
+        xsi:schemaLocation="http://maven.apache.org/plugins/maven-assembly-plugin/assembly/1.1.2 https://maven.apache.org/xsd/assembly-1.1.2.xsd">
     <id>uppercase-transformer-kafka</id>
     <dependencySets>
         <dependencySet>
diff --git a/partitioning-samples/partitioning-producer-sample/src/main/docker/assembly-rabbit.xml b/partitioning-samples/partitioning-producer-sample/src/main/docker/assembly-rabbit.xml
index 3426d16..8f3da73 100644
--- a/partitioning-samples/partitioning-producer-sample/src/main/docker/assembly-rabbit.xml
+++ b/partitioning-samples/partitioning-producer-sample/src/main/docker/assembly-rabbit.xml
@@ -1,7 +1,7 @@
 <assembly
         xmlns="http://maven.apache.org/plugins/maven-assembly-plugin/assembly/1.1.2"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-        xsi:schemaLocation="http://maven.apache.org/plugins/maven-assembly-plugin/assembly/1.1.2 http://maven.apache.org/xsd/assembly-1.1.2.xsd">
+        xsi:schemaLocation="http://maven.apache.org/plugins/maven-assembly-plugin/assembly/1.1.2 https://maven.apache.org/xsd/assembly-1.1.2.xsd">
     <id>uppercase-transformer-kafka</id>
     <dependencySets>
         <dependencySet>
diff --git a/partitioning-samples/pom.xml b/partitioning-samples/pom.xml
index 34caf47..c307020 100644
--- a/partitioning-samples/pom.xml
+++ b/partitioning-samples/pom.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
     <groupId>io.spring.cloud.stream.sample</groupId>
     <artifactId>partitioning-samples</artifactId>
diff --git a/pom.xml b/pom.xml
index 50f06ed..c2c43ce 100644
--- a/pom.xml
+++ b/pom.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
 	<modelVersion>4.0.0</modelVersion>
 
 	<groupId>io.spring.cloud.stream.sample</groupId>
@@ -71,7 +71,7 @@
 		<repository>
 			<id>spring-snapshots</id>
 			<name>Spring Snapshots</name>
-			<url>http://repo.spring.io/libs-snapshot-local</url>
+			<url>https://repo.spring.io/libs-snapshot-local</url>
 			<snapshots>
 				<enabled>true</enabled>
 			</snapshots>
@@ -82,7 +82,7 @@
 		<repository>
 			<id>spring-milestones</id>
 			<name>Spring Milestones</name>
-			<url>http://repo.spring.io/libs-milestone-local</url>
+			<url>https://repo.spring.io/libs-milestone-local</url>
 			<snapshots>
 				<enabled>false</enabled>
 			</snapshots>
@@ -90,7 +90,7 @@
 		<repository>
 			<id>spring-releases</id>
 			<name>Spring Releases</name>
-			<url>http://repo.spring.io/release</url>
+			<url>https://repo.spring.io/release</url>
 			<snapshots>
 				<enabled>false</enabled>
 			</snapshots>
@@ -100,7 +100,7 @@
 		<pluginRepository>
 			<id>spring-snapshots</id>
 			<name>Spring Snapshots</name>
-			<url>http://repo.spring.io/libs-snapshot-local</url>
+			<url>https://repo.spring.io/libs-snapshot-local</url>
 			<snapshots>
 				<enabled>true</enabled>
 			</snapshots>
@@ -111,7 +111,7 @@
 		<pluginRepository>
 			<id>spring-milestones</id>
 			<name>Spring Milestones</name>
-			<url>http://repo.spring.io/libs-milestone-local</url>
+			<url>https://repo.spring.io/libs-milestone-local</url>
 			<snapshots>
 				<enabled>false</enabled>
 			</snapshots>
@@ -119,7 +119,7 @@
 		<pluginRepository>
 			<id>spring-releases</id>
 			<name>Spring Releases</name>
-			<url>http://repo.spring.io/libs-release-local</url>
+			<url>https://repo.spring.io/libs-release-local</url>
 			<snapshots>
 				<enabled>false</enabled>
 			</snapshots>
diff --git a/processor-samples/polled-consumer/pom.xml b/processor-samples/polled-consumer/pom.xml
index fc3ce32..5720de9 100644
--- a/processor-samples/polled-consumer/pom.xml
+++ b/processor-samples/polled-consumer/pom.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
 	<modelVersion>4.0.0</modelVersion>
 
 	<artifactId>polled-consumer</artifactId>
diff --git a/processor-samples/pom.xml b/processor-samples/pom.xml
index a9ddf97..9d217d1 100644
--- a/processor-samples/pom.xml
+++ b/processor-samples/pom.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
     <groupId>io.spring.cloud.stream.sample</groupId>
     <artifactId>processor-samples</artifactId>
diff --git a/processor-samples/reactive-processor/pom.xml b/processor-samples/reactive-processor/pom.xml
index 3bc4e34..7ae2424 100644
--- a/processor-samples/reactive-processor/pom.xml
+++ b/processor-samples/reactive-processor/pom.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
 
     <artifactId>reactive-processor</artifactId>
diff --git a/processor-samples/sensor-average-reactive/pom.xml b/processor-samples/sensor-average-reactive/pom.xml
index bfdc090..b06c488 100644
--- a/processor-samples/sensor-average-reactive/pom.xml
+++ b/processor-samples/sensor-average-reactive/pom.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
 
     <artifactId>sensor-average-reactive</artifactId>
diff --git a/processor-samples/streamlistener-basic/pom.xml b/processor-samples/streamlistener-basic/pom.xml
index c52c8c9..14b7804 100644
--- a/processor-samples/streamlistener-basic/pom.xml
+++ b/processor-samples/streamlistener-basic/pom.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-		 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+		 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
 	<modelVersion>4.0.0</modelVersion>
 
 	<artifactId>streamlistener-basic</artifactId>
diff --git a/processor-samples/uppercase-transformer/pom.xml b/processor-samples/uppercase-transformer/pom.xml
index fcbeabf..c760d52 100644
--- a/processor-samples/uppercase-transformer/pom.xml
+++ b/processor-samples/uppercase-transformer/pom.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
 	<modelVersion>4.0.0</modelVersion>
 
 	<artifactId>uppercase-transformer</artifactId>
diff --git a/processor-samples/uppercase-transformer/src/main/docker/assembly-kafka.xml b/processor-samples/uppercase-transformer/src/main/docker/assembly-kafka.xml
index 34e4485..177b882 100644
--- a/processor-samples/uppercase-transformer/src/main/docker/assembly-kafka.xml
+++ b/processor-samples/uppercase-transformer/src/main/docker/assembly-kafka.xml
@@ -1,7 +1,7 @@
 <assembly
         xmlns="http://maven.apache.org/plugins/maven-assembly-plugin/assembly/1.1.2"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-        xsi:schemaLocation="http://maven.apache.org/plugins/maven-assembly-plugin/assembly/1.1.2 http://maven.apache.org/xsd/assembly-1.1.2.xsd">
+        xsi:schemaLocation="http://maven.apache.org/plugins/maven-assembly-plugin/assembly/1.1.2 https://maven.apache.org/xsd/assembly-1.1.2.xsd">
     <id>uppercase-transformer-kafka</id>
     <dependencySets>
         <dependencySet>
diff --git a/processor-samples/uppercase-transformer/src/main/docker/assembly-rabbit.xml b/processor-samples/uppercase-transformer/src/main/docker/assembly-rabbit.xml
index 343467a..3629ac8 100644
--- a/processor-samples/uppercase-transformer/src/main/docker/assembly-rabbit.xml
+++ b/processor-samples/uppercase-transformer/src/main/docker/assembly-rabbit.xml
@@ -1,7 +1,7 @@
 <assembly
         xmlns="http://maven.apache.org/plugins/maven-assembly-plugin/assembly/1.1.2"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-        xsi:schemaLocation="http://maven.apache.org/plugins/maven-assembly-plugin/assembly/1.1.2 http://maven.apache.org/xsd/assembly-1.1.2.xsd">
+        xsi:schemaLocation="http://maven.apache.org/plugins/maven-assembly-plugin/assembly/1.1.2 https://maven.apache.org/xsd/assembly-1.1.2.xsd">
     <id>uppercase-transformer-rabbit</id>
     <dependencySets>
         <dependencySet>
diff --git a/samples-e2e-tests/pom.xml b/samples-e2e-tests/pom.xml
index 8270ee2..bdcf5d4 100644
--- a/samples-e2e-tests/pom.xml
+++ b/samples-e2e-tests/pom.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
 
     <artifactId>samples-e2e-tests</artifactId>
diff --git a/schema-registry-samples/kafka-streams-schema-evolution/custom-confluent-producer1/pom.xml b/schema-registry-samples/kafka-streams-schema-evolution/custom-confluent-producer1/pom.xml
index 785d8fc..1ce12f4 100644
--- a/schema-registry-samples/kafka-streams-schema-evolution/custom-confluent-producer1/pom.xml
+++ b/schema-registry-samples/kafka-streams-schema-evolution/custom-confluent-producer1/pom.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
 
     <artifactId>custom-confluent-producer1</artifactId>
@@ -99,7 +99,7 @@
     <repositories>
         <repository>
             <id>confluent</id>
-            <url>http://packages.confluent.io/maven/</url>
+            <url>https://packages.confluent.io/maven/</url>
         </repository>
     </repositories>
 </project>
diff --git a/schema-registry-samples/kafka-streams-schema-evolution/custom-confluent-producer2/pom.xml b/schema-registry-samples/kafka-streams-schema-evolution/custom-confluent-producer2/pom.xml
index 0fd9dfc..154e3f0 100644
--- a/schema-registry-samples/kafka-streams-schema-evolution/custom-confluent-producer2/pom.xml
+++ b/schema-registry-samples/kafka-streams-schema-evolution/custom-confluent-producer2/pom.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
 
     <artifactId>custom-confluent-producer2</artifactId>
@@ -99,7 +99,7 @@
     <repositories>
         <repository>
             <id>confluent</id>
-            <url>http://packages.confluent.io/maven/</url>
+            <url>https://packages.confluent.io/maven/</url>
         </repository>
     </repositories>
 </project>
diff --git a/schema-registry-samples/kafka-streams-schema-evolution/kafka-streams-confluent-consumer/pom.xml b/schema-registry-samples/kafka-streams-schema-evolution/kafka-streams-confluent-consumer/pom.xml
index 693a2be..bc82bd7 100644
--- a/schema-registry-samples/kafka-streams-schema-evolution/kafka-streams-confluent-consumer/pom.xml
+++ b/schema-registry-samples/kafka-streams-schema-evolution/kafka-streams-confluent-consumer/pom.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
 
     <artifactId>kafka-streams-confluent-consumer</artifactId>
@@ -89,7 +89,7 @@
     <repositories>
         <repository>
             <id>confluent</id>
-            <url>http://packages.confluent.io/maven/</url>
+            <url>https://packages.confluent.io/maven/</url>
         </repository>
     </repositories>
 </project>
diff --git a/schema-registry-samples/kafka-streams-schema-evolution/pom.xml b/schema-registry-samples/kafka-streams-schema-evolution/pom.xml
index 25279d8..a02a62e 100644
--- a/schema-registry-samples/kafka-streams-schema-evolution/pom.xml
+++ b/schema-registry-samples/kafka-streams-schema-evolution/pom.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
     <groupId>io.spring.cloud.stream.sample</groupId>
     <artifactId>kafka-streams-schema-evolution</artifactId>
diff --git a/schema-registry-samples/pom.xml b/schema-registry-samples/pom.xml
index 8232f0b..114134f 100644
--- a/schema-registry-samples/pom.xml
+++ b/schema-registry-samples/pom.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
     <groupId>io.spring.cloud.stream.sample</groupId>
     <artifactId>schema-registry-samples</artifactId>
diff --git a/schema-registry-samples/schema-registry-confluent/pom.xml b/schema-registry-samples/schema-registry-confluent/pom.xml
index d79456d..33af8a8 100644
--- a/schema-registry-samples/schema-registry-confluent/pom.xml
+++ b/schema-registry-samples/schema-registry-confluent/pom.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
     <groupId>io.spring.cloud.stream.sample</groupId>
     <artifactId>schema-registry-confluent</artifactId>
diff --git a/schema-registry-samples/schema-registry-confluent/schema-registry-confluent-consumer/pom.xml b/schema-registry-samples/schema-registry-confluent/schema-registry-confluent-consumer/pom.xml
index 24cf97d..15412a3 100644
--- a/schema-registry-samples/schema-registry-confluent/schema-registry-confluent-consumer/pom.xml
+++ b/schema-registry-samples/schema-registry-confluent/schema-registry-confluent-consumer/pom.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
 
     <artifactId>schema-registry-confluent-consumer</artifactId>
@@ -101,7 +101,7 @@
     <repositories>
         <repository>
             <id>confluent</id>
-            <url>http://packages.confluent.io/maven/</url>
+            <url>https://packages.confluent.io/maven/</url>
         </repository>
     </repositories>
 
diff --git a/schema-registry-samples/schema-registry-confluent/schema-registry-confluent-producer1/pom.xml b/schema-registry-samples/schema-registry-confluent/schema-registry-confluent-producer1/pom.xml
index d3d5ff9..3475b2e 100644
--- a/schema-registry-samples/schema-registry-confluent/schema-registry-confluent-producer1/pom.xml
+++ b/schema-registry-samples/schema-registry-confluent/schema-registry-confluent-producer1/pom.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
 
     <artifactId>schema-registry-confluent-producer1</artifactId>
@@ -122,7 +122,7 @@
     <repositories>
         <repository>
             <id>confluent</id>
-            <url>http://packages.confluent.io/maven/</url>
+            <url>https://packages.confluent.io/maven/</url>
         </repository>
     </repositories>
 </project>
diff --git a/schema-registry-samples/schema-registry-confluent/schema-registry-confluent-producer2/pom.xml b/schema-registry-samples/schema-registry-confluent/schema-registry-confluent-producer2/pom.xml
index 173e575..c6797eb 100644
--- a/schema-registry-samples/schema-registry-confluent/schema-registry-confluent-producer2/pom.xml
+++ b/schema-registry-samples/schema-registry-confluent/schema-registry-confluent-producer2/pom.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
 
     <artifactId>schema-registry-confluent-producer2</artifactId>
@@ -122,7 +122,7 @@
     <repositories>
         <repository>
             <id>confluent</id>
-            <url>http://packages.confluent.io/maven/</url>
+            <url>https://packages.confluent.io/maven/</url>
         </repository>
     </repositories>
 </project>
diff --git a/schema-registry-samples/schema-registry-vanilla/kafka-streams-consumer/pom.xml b/schema-registry-samples/schema-registry-vanilla/kafka-streams-consumer/pom.xml
index 3723628..3bc5e23 100644
--- a/schema-registry-samples/schema-registry-vanilla/kafka-streams-consumer/pom.xml
+++ b/schema-registry-samples/schema-registry-vanilla/kafka-streams-consumer/pom.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
 
     <artifactId>kafka-streams-consumer</artifactId>
diff --git a/schema-registry-samples/schema-registry-vanilla/pom.xml b/schema-registry-samples/schema-registry-vanilla/pom.xml
index eed0cea..2a0ac24 100644
--- a/schema-registry-samples/schema-registry-vanilla/pom.xml
+++ b/schema-registry-samples/schema-registry-vanilla/pom.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
     <groupId>io.spring.cloud.stream.sample</groupId>
     <artifactId>schema-registry-vanilla</artifactId>
diff --git a/schema-registry-samples/schema-registry-vanilla/schema-registry-vanilla-consumer/pom.xml b/schema-registry-samples/schema-registry-vanilla/schema-registry-vanilla-consumer/pom.xml
index 881fbb6..c01c688 100644
--- a/schema-registry-samples/schema-registry-vanilla/schema-registry-vanilla-consumer/pom.xml
+++ b/schema-registry-samples/schema-registry-vanilla/schema-registry-vanilla-consumer/pom.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
 
     <artifactId>schema-registry-vanilla-consumer</artifactId>
diff --git a/schema-registry-samples/schema-registry-vanilla/schema-registry-vanilla-producer1/pom.xml b/schema-registry-samples/schema-registry-vanilla/schema-registry-vanilla-producer1/pom.xml
index beef0f8..968e9c8 100644
--- a/schema-registry-samples/schema-registry-vanilla/schema-registry-vanilla-producer1/pom.xml
+++ b/schema-registry-samples/schema-registry-vanilla/schema-registry-vanilla-producer1/pom.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
 
     <artifactId>schema-registry-vanilla-producer1</artifactId>
diff --git a/schema-registry-samples/schema-registry-vanilla/schema-registry-vanilla-producer2/pom.xml b/schema-registry-samples/schema-registry-vanilla/schema-registry-vanilla-producer2/pom.xml
index 0f9e180..dc7a613 100644
--- a/schema-registry-samples/schema-registry-vanilla/schema-registry-vanilla-producer2/pom.xml
+++ b/schema-registry-samples/schema-registry-vanilla/schema-registry-vanilla-producer2/pom.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
 
     <artifactId>schema-registry-vanilla-producer2</artifactId>
diff --git a/schema-registry-samples/schema-registry-vanilla/schema-registry-vanilla-server/pom.xml b/schema-registry-samples/schema-registry-vanilla/schema-registry-vanilla-server/pom.xml
index 65aeeaa..508ad4f 100644
--- a/schema-registry-samples/schema-registry-vanilla/schema-registry-vanilla-server/pom.xml
+++ b/schema-registry-samples/schema-registry-vanilla/schema-registry-vanilla-server/pom.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
 	<modelVersion>4.0.0</modelVersion>
 
 	<artifactId>schema-registry-vanilla-server</artifactId>
diff --git a/sink-samples/jdbc-sink/pom.xml b/sink-samples/jdbc-sink/pom.xml
index 07af99d..fdfc379 100644
--- a/sink-samples/jdbc-sink/pom.xml
+++ b/sink-samples/jdbc-sink/pom.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-		 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+		 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
 	<modelVersion>4.0.0</modelVersion>
 
 	<artifactId>sample-jdbc-sink</artifactId>
diff --git a/sink-samples/pom.xml b/sink-samples/pom.xml
index 8a97360..1fb2fdc 100644
--- a/sink-samples/pom.xml
+++ b/sink-samples/pom.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
     <groupId>io.spring.cloud.stream.sample</groupId>
     <artifactId>sink-samples</artifactId>
diff --git a/source-samples/dynamic-destination-source/pom.xml b/source-samples/dynamic-destination-source/pom.xml
index fbb9187..dcef41c 100644
--- a/source-samples/dynamic-destination-source/pom.xml
+++ b/source-samples/dynamic-destination-source/pom.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
 	<modelVersion>4.0.0</modelVersion>
 
 	<artifactId>dynamic-destination-source</artifactId>
diff --git a/source-samples/jdbc-source/pom.xml b/source-samples/jdbc-source/pom.xml
index 1119d29..557066b 100644
--- a/source-samples/jdbc-source/pom.xml
+++ b/source-samples/jdbc-source/pom.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-		 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+		 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
 	<modelVersion>4.0.0</modelVersion>
 
 	<artifactId>sample-jdbc-source</artifactId>
diff --git a/source-samples/pom.xml b/source-samples/pom.xml
index 6e9e157..6f141cf 100644
--- a/source-samples/pom.xml
+++ b/source-samples/pom.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
     <groupId>io.spring.cloud.stream.sample</groupId>
     <artifactId>source-samples</artifactId>
diff --git a/testing-samples/pom.xml b/testing-samples/pom.xml
index dbd9aca..8173321 100644
--- a/testing-samples/pom.xml
+++ b/testing-samples/pom.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
     <groupId>io.spring.cloud.stream.sample</groupId>
     <artifactId>testing-samples</artifactId>
diff --git a/testing-samples/test-embedded-kafka/pom.xml b/testing-samples/test-embedded-kafka/pom.xml
index 63a4f71..b645c04 100644
--- a/testing-samples/test-embedded-kafka/pom.xml
+++ b/testing-samples/test-embedded-kafka/pom.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
 	<modelVersion>4.0.0</modelVersion>
 
 	<artifactId>test-embedded-kafka</artifactId>
diff --git a/testing-samples/testing-demo/pom.xml b/testing-samples/testing-demo/pom.xml
index 422ec22..aa9d251 100644
--- a/testing-samples/testing-demo/pom.xml
+++ b/testing-samples/testing-demo/pom.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-		 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+		 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
 	<modelVersion>4.0.0</modelVersion>
 
 	<artifactId>testing-demo</artifactId>
diff --git a/transaction-kafka-samples/pom.xml b/transaction-kafka-samples/pom.xml
index 389e4e3..66b2789 100644
--- a/transaction-kafka-samples/pom.xml
+++ b/transaction-kafka-samples/pom.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
     <groupId>io.spring.cloud.stream.sample</groupId>
     <artifactId>transaction-kafka-samples</artifactId>
diff --git a/transaction-kafka-samples/transaction-http-source/pom.xml b/transaction-kafka-samples/transaction-http-source/pom.xml
index 97ba2e8..f0b09d5 100644
--- a/transaction-kafka-samples/transaction-http-source/pom.xml
+++ b/transaction-kafka-samples/transaction-http-source/pom.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
   <modelVersion>4.0.0</modelVersion>
 
   <artifactId>transaction-http-source</artifactId>
diff --git a/transaction-kafka-samples/transaction-logger-sink/pom.xml b/transaction-kafka-samples/transaction-logger-sink/pom.xml
index a7ee339..377cae4 100644
--- a/transaction-kafka-samples/transaction-logger-sink/pom.xml
+++ b/transaction-kafka-samples/transaction-logger-sink/pom.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
   <modelVersion>4.0.0</modelVersion>
 
   <artifactId>transaction-logger-sink</artifactId>
diff --git a/transaction-kafka-samples/transaction-spring-data-processor/pom.xml b/transaction-kafka-samples/transaction-spring-data-processor/pom.xml
index 8974624..5b5166d 100644
--- a/transaction-kafka-samples/transaction-spring-data-processor/pom.xml
+++ b/transaction-kafka-samples/transaction-spring-data-processor/pom.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
   <modelVersion>4.0.0</modelVersion>
 
   <artifactId>transaction-spring-data-processor</artifactId>