diff --git a/util/clustersim-gui/pom.xml b/util/clustersim-gui/pom.xml
index 612fcf3..081098c 100644
--- a/util/clustersim-gui/pom.xml
+++ b/util/clustersim-gui/pom.xml
@@ -20,7 +20,7 @@
     <dependency>
       <groupId>junit</groupId>
       <artifactId>junit</artifactId>
-      <version>3.8.1</version>
+      <version>4.13.1</version>
       <scope>test</scope>
     </dependency>
     <dependency>