diff --git a/packsack/pom.xml b/packsack/pom.xml
index e6c34e3..a484b65 100644
--- a/packsack/pom.xml
+++ b/packsack/pom.xml
@@ -14,7 +14,7 @@
     <dependency>
         <groupId>junit</groupId>
         <artifactId>junit</artifactId>
-        <version>4.12</version>
+        <version>4.13.1</version>
         <scope>test</scope>
     </dependency>
 </dependencies>