diff --git a/Netty-heartbeat/pom.xml b/Netty-heartbeat/pom.xml
index b470417..5e6feaf 100644
--- a/Netty-heartbeat/pom.xml
+++ b/Netty-heartbeat/pom.xml
@@ -21,7 +21,7 @@
     <dependency>
       <groupId>junit</groupId>
       <artifactId>junit</artifactId>
-      <version>3.8.1</version>
+      <version>4.13.1</version>
       <scope>test</scope>
     </dependency>
    		 <dependency>