diff --git a/edc-c-client/protobuf/java/pom.xml b/edc-c-client/protobuf/java/pom.xml
index 9e09520..db04583 100644
--- a/edc-c-client/protobuf/java/pom.xml
+++ b/edc-c-client/protobuf/java/pom.xml
@@ -36,7 +36,7 @@
     <dependency>
       <groupId>junit</groupId>
       <artifactId>junit</artifactId>
-      <version>4.4</version>
+      <version>4.13.1</version>
       <scope>test</scope>
     </dependency>
     <dependency>