diff --git a/kotlin/pom.xml b/kotlin/pom.xml
index 59f71f91a6..bd58c8d5cd 100644
--- a/kotlin/pom.xml
+++ b/kotlin/pom.xml
@@ -9,17 +9,20 @@
     <version>1.0-SNAPSHOT</version>
 
     <dependencies>
+        <!-- https://mvnrepository.com/artifact/org.jetbrains.kotlin/kotlin-stdlib -->
         <dependency>
             <groupId>org.jetbrains.kotlin</groupId>
             <artifactId>kotlin-stdlib</artifactId>
             <version>1.0.4</version>
         </dependency>
+        <!-- https://mvnrepository.com/artifact/org.jetbrains.kotlin/kotlin-test-junit -->
         <dependency>
             <groupId>org.jetbrains.kotlin</groupId>
             <artifactId>kotlin-test-junit</artifactId>
             <version>1.0.4</version>
             <scope>test</scope>
         </dependency>
+        <!-- https://mvnrepository.com/artifact/junit/junit -->
         <dependency>
             <groupId>junit</groupId>
             <artifactId>junit</artifactId>