diff --git a/locktester/pom.xml b/locktester/pom.xml
index af1c926..5f37bea 100644
--- a/locktester/pom.xml
+++ b/locktester/pom.xml
@@ -55,7 +55,7 @@
     <dependency>
       <groupId>junit</groupId>
       <artifactId>junit</artifactId>
-      <version>3.8.1</version>
+      <version>4.13.1</version>
       <scope>test</scope>
     </dependency>
   </dependencies>