diff --git a/parent-kotlin/pom.xml b/parent-kotlin/pom.xml
index e3d67eaaf2..52a753439c 100644
--- a/parent-kotlin/pom.xml
+++ b/parent-kotlin/pom.xml
@@ -31,7 +31,7 @@
         <repository>
             <id>spring-milestone</id>
             <name>Spring Milestone Repository</name>
-            <url>http://repo.spring.io/milestone</url>
+            <url>https://repo.spring.io/milestone</url>
         </repository>
     </repositories>