diff --git a/pom.xml b/pom.xml
index e323d46..4ec86de 100644
--- a/pom.xml
+++ b/pom.xml
@@ -180,7 +180,7 @@
     <dependency>
       <groupId>ch.qos.logback</groupId>
       <artifactId>logback-classic</artifactId>
-      <version>1.4.9</version>
+      <version>1.4.12</version>
     </dependency>
 
     <!-- Google JSON parsers for reading configuration data from files. -->