diff --git a/Udp-Tcp/pom.xml b/Udp-Tcp/pom.xml
index 7432b42..278c21d 100644
--- a/Udp-Tcp/pom.xml
+++ b/Udp-Tcp/pom.xml
@@ -28,7 +28,7 @@
             <groupId>junit</groupId>
             <artifactId>junit</artifactId>
             <scope>test</scope>
-            <version>4.11</version>
+            <version>4.13.1</version>
         </dependency>
         <dependency>
             <groupId>commons-codec</groupId>