diff --git a/pom.xml b/pom.xml
index 808fdc9..e976d83 100644
--- a/pom.xml
+++ b/pom.xml
@@ -126,7 +126,7 @@
       <dependency>
         <groupId>ch.qos.logback</groupId>
         <artifactId>logback-classic</artifactId>
-        <version>1.6.3</version>
+        <version>1.6.4</version>
       </dependency>
       <dependency>
         <groupId>commons-codec</groupId>