diff --git a/machine-learning-samples/pom.xml b/machine-learning-samples/pom.xml
old mode 100755
new mode 100644
index 49421d1..d6670f3
--- a/machine-learning-samples/pom.xml
+++ b/machine-learning-samples/pom.xml
@@ -111,7 +111,7 @@
         <dependency>
             <groupId>junit</groupId>
             <artifactId>junit</artifactId>
-            <version>4.12</version>
+            <version>4.13.1</version>
             <scope>test</scope>
         </dependency>