diff --git a/pom.xml b/pom.xml
index 27ab738a..81c6e463 100644
--- a/pom.xml
+++ b/pom.xml
@@ -79,7 +79,7 @@
     <ch-commons-util.version>6.0.2</ch-commons-util.version>
     <ch-commons-charset.version>3.0.2</ch-commons-charset.version>
     <ch-commons-gsm.version>3.0.0</ch-commons-gsm.version>
-    <netty.version>4.0.25.Final</netty.version>
+    <netty.version>4.0.28.Final</netty.version>
   </properties>
 
 </project>