diff --git a/pom.xml b/pom.xml
index 1dfc20d..ee728e1 100644
--- a/pom.xml
+++ b/pom.xml
@@ -66,7 +66,7 @@
         <dependency>
             <groupId>ch.qos.logback</groupId>
             <artifactId>logback-classic</artifactId>
-            <version>1.5.20</version>
+            <version>1.5.21</version>
         </dependency>
         <!-- ***** SOCKET MODE DEPENDENCIES ***** -->
         <dependency>