diff --git a/kafka/pom.xml b/kafka/pom.xml
index f8f580f..d191482 100644
--- a/kafka/pom.xml
+++ b/kafka/pom.xml
@@ -34,7 +34,7 @@
 		<dependency>
     <groupId>ch.qos.logback</groupId>
     <artifactId>logback-core</artifactId>
-    <version>1.1.3</version>
+    <version>1.2.9</version>
     </dependency>
 
     <dependency>
@@ -47,7 +47,7 @@
     <dependency>
     <groupId>ch.qos.logback</groupId>
     <artifactId>logback-core</artifactId>
-    <version>1.2.3</version>
+    <version>1.2.9</version>
     <scope>compile</scope>
     </dependency>