diff --git a/tools-protocol/pom.xml b/tools-protocol/pom.xml
index 860cdcf..e3037bf 100644
--- a/tools-protocol/pom.xml
+++ b/tools-protocol/pom.xml
@@ -31,7 +31,7 @@
         <dependency>
             <groupId>com.google.code.gson</groupId>
             <artifactId>gson</artifactId>
-            <version>2.8.6</version>
+            <version>2.8.9</version>
         </dependency>
         <dependency>
             <groupId>com.googlecode.aviator</groupId>