diff --git a/18-supervise-escalate/pom.xml b/18-supervise-escalate/pom.xml
old mode 100755
new mode 100644
index 3935da5..0689db1
--- a/18-supervise-escalate/pom.xml
+++ b/18-supervise-escalate/pom.xml
@@ -37,7 +37,7 @@
         <dependency>
             <groupId>junit</groupId>
             <artifactId>junit</artifactId>
-            <version>4.12</version>
+            <version>4.13.1</version>
             <scope>test</scope>
         </dependency>
     </dependencies>