diff --git a/core/prettyprinting/npp/pom.xml b/core/prettyprinting/npp/pom.xml
index a75be9d8c9..9c12e924e7 100644
--- a/core/prettyprinting/npp/pom.xml
+++ b/core/prettyprinting/npp/pom.xml
@@ -27,7 +27,7 @@
         <dependency>
             <groupId>junit</groupId>
             <artifactId>junit</artifactId>
-            <version>4.11</version>
+            <version>4.13.1</version>
         </dependency>
 
         <dependency>