diff --git a/xoom-actors-playground-kotlin/pom.xml b/xoom-actors-playground-kotlin/pom.xml
index 26aa6cad..735c6f15 100644
--- a/xoom-actors-playground-kotlin/pom.xml
+++ b/xoom-actors-playground-kotlin/pom.xml
@@ -32,7 +32,7 @@
     <dependency>
       <groupId>ch.qos.logback</groupId>
       <artifactId>logback-classic</artifactId>
-      <version>1.2.0</version>
+      <version>1.3.12</version>
       <scope>test</scope>
     </dependency>
     <dependency>