diff --git a/pom.xml b/pom.xml
index a2f1fd0..26470c6 100644
--- a/pom.xml
+++ b/pom.xml
@@ -399,7 +399,7 @@
     <dependency>
       <groupId>ch.qos.logback</groupId>
       <artifactId>logback-classic</artifactId>
-      <version>1.5.1</version>
+      <version>1.5.6</version>
     </dependency>
     <dependency>
       <groupId>javax.xml.bind</groupId>