diff --git a/pom.xml b/pom.xml
old mode 100755
new mode 100644
index 9357d83..5697469
--- a/pom.xml
+++ b/pom.xml
@@ -251,7 +251,7 @@
         <gson-fire-version>1.8.3</gson-fire-version>
         <swagger-core-version>1.5.22</swagger-core-version>
         <okhttp-version>3.14.2</okhttp-version>
-        <gson-version>2.8.5</gson-version>
+        <gson-version>2.8.9</gson-version>
         <threetenbp-version>1.4.0</threetenbp-version>
         <maven-plugin-version>1.0.0</maven-plugin-version>
         <javax-annotation-version>1.0</javax-annotation-version>