diff --git a/16_coaps/javacf-src/coaps-psk-client/pom.xml b/16_coaps/javacf-src/coaps-psk-client/pom.xml
old mode 100755
new mode 100644
index 384061f..17ddceb
--- a/16_coaps/javacf-src/coaps-psk-client/pom.xml
+++ b/16_coaps/javacf-src/coaps-psk-client/pom.xml
@@ -20,7 +20,7 @@
         <dependency>
             <groupId>junit</groupId>
             <artifactId>junit</artifactId>
-            <version>3.8.1</version>
+            <version>4.13.1</version>
             <scope>test</scope>
         </dependency>
         <dependency>