diff --git a/pom.xml b/pom.xml
index 980e9be..2d0ed4f 100644
--- a/pom.xml
+++ b/pom.xml
@@ -104,7 +104,7 @@
         <dependency>
             <groupId>ch.qos.logback</groupId>
             <artifactId>logback-core</artifactId>
-            <version>1.5.8</version>
+            <version>1.5.9</version>
             <scope>runtime</scope>
         </dependency>
         <dependency>