diff --git a/pom.xml b/pom.xml
index 2db07618..bf040540 100644
--- a/pom.xml
+++ b/pom.xml
@@ -44,7 +44,7 @@
       <dependency>
         <groupId>ch.qos.logback</groupId>
         <artifactId>logback-classic</artifactId>
-        <version>1.6.3</version>
+        <version>1.6.4</version>
       </dependency>
       <dependency>
         <groupId>ch.qos.logback</groupId>
@@ -185,7 +185,7 @@
     <dependency>
       <groupId>ch.qos.logback</groupId>
       <artifactId>logback-classic</artifactId>
-      <version>1.6.3</version>
+      <version>1.6.4</version>
       <scope>test</scope>
     </dependency>