diff --git a/simulation/activforms/pom.xml b/simulation/activforms/pom.xml
old mode 100755
new mode 100644
index 0e2e37e..5898af4
--- a/simulation/activforms/pom.xml
+++ b/simulation/activforms/pom.xml
@@ -22,7 +22,7 @@
         <dependency>
             <groupId>com.google.code.gson</groupId>
             <artifactId>gson</artifactId>
-            <version>2.8.5</version>
+            <version>2.8.9</version>
         </dependency>
         <dependency>
             <groupId>org.apache.httpcomponents</groupId>