diff --git a/msal-obo-sample/pom.xml b/msal-obo-sample/pom.xml
old mode 100755
new mode 100644
index 493db6a..f943032
--- a/msal-obo-sample/pom.xml
+++ b/msal-obo-sample/pom.xml
@@ -79,7 +79,7 @@
         <dependency>
             <groupId>org.jetbrains.kotlin</groupId>
             <artifactId>kotlin-stdlib</artifactId>
-            <version>1.4.0</version>
+            <version>1.5.30</version>
         </dependency>
 
     </dependencies>