diff --git a/kafka-e2e-kotlin-sample/customer-service/pom.xml b/kafka-e2e-kotlin-sample/customer-service/pom.xml
index a7fffc2..9dcacc0 100644
--- a/kafka-e2e-kotlin-sample/customer-service/pom.xml
+++ b/kafka-e2e-kotlin-sample/customer-service/pom.xml
@@ -146,7 +146,7 @@
     <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-e2e-kotlin-sample/order-service/pom.xml b/kafka-e2e-kotlin-sample/order-service/pom.xml
index 9d5662c..78f8fcd 100644
--- a/kafka-e2e-kotlin-sample/order-service/pom.xml
+++ b/kafka-e2e-kotlin-sample/order-service/pom.xml
@@ -146,7 +146,7 @@
     <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-e2e-kotlin-sample/shipping-service/pom.xml b/kafka-e2e-kotlin-sample/shipping-service/pom.xml
index 13e8dcd..50d1ce3 100644
--- a/kafka-e2e-kotlin-sample/shipping-service/pom.xml
+++ b/kafka-e2e-kotlin-sample/shipping-service/pom.xml
@@ -146,7 +146,7 @@
     <repositories>
         <repository>
             <id>confluent</id>
-            <url>http://packages.confluent.io/maven/</url>
+            <url>https://packages.confluent.io/maven/</url>
         </repository>
     </repositories>