diff --git a/pom.xml b/pom.xml
old mode 100755
new mode 100644
index 326d32d..cb144bf
--- a/pom.xml
+++ b/pom.xml
@@ -117,7 +117,7 @@
         <gson-fire-version>1.8.0</gson-fire-version>
         <swagger-core-version>1.5.18</swagger-core-version>
         <okhttp-version>3.14.0</okhttp-version>
-        <gson-version>2.8.1</gson-version>
+        <gson-version>2.8.9</gson-version>
         <threetenbp-version>1.3.8</threetenbp-version>
         <maven-plugin-version>1.0.0</maven-plugin-version>
         <junit-version>4.13.1</junit-version>