diff --git a/pom.xml b/pom.xml
index 4632596c..be4b3863 100644
--- a/pom.xml
+++ b/pom.xml
@@ -37,12 +37,12 @@
         <dependency>
             <groupId>ch.qos.logback</groupId>
             <artifactId>logback-core</artifactId>
-            <version>1.5.3</version>
+            <version>1.5.6</version>
         </dependency>
         <dependency>
             <groupId>ch.qos.logback</groupId>
             <artifactId>logback-classic</artifactId>
-            <version>1.5.3</version>
+            <version>1.5.6</version>
         </dependency>
 
         <dependency>