diff --git a/directory/cas/cas-sample-java-webapp-master/pom.xml b/directory/cas/cas-sample-java-webapp-master/pom.xml
index 9656dfd7..608ce03b 100644
--- a/directory/cas/cas-sample-java-webapp-master/pom.xml
+++ b/directory/cas/cas-sample-java-webapp-master/pom.xml
@@ -55,7 +55,7 @@
     <dependency>
       <groupId>ch.qos.logback</groupId>
       <artifactId>logback-classic</artifactId>
-      <version>1.1.2</version>
+      <version>1.3.12</version>
       <scope>runtime</scope>
     </dependency>    
   </dependencies>