diff --git a/pom.xml b/pom.xml
old mode 100755
new mode 100644
index a483ba66..e92fc292
--- a/pom.xml
+++ b/pom.xml
@@ -506,7 +506,7 @@
         <dependency>
             <groupId>org.jetbrains.kotlin</groupId>
             <artifactId>kotlin-stdlib</artifactId>
-            <version>1.1.51</version>
+            <version>1.6.0</version>
             <scope>test</scope>
         </dependency>