update gson version
diff --git a/dubbo-serialization-extensions/dubbo-serialization-test/pom.xml b/dubbo-serialization-extensions/dubbo-serialization-test/pom.xml
index e1c9bd2..e97a0cd 100644
--- a/dubbo-serialization-extensions/dubbo-serialization-test/pom.xml
+++ b/dubbo-serialization-extensions/dubbo-serialization-test/pom.xml
@@ -40,9 +40,20 @@
             <version>1.0.0</version>
         </dependency>
         <dependency>
+            <artifactId>gson</artifactId>
+            <groupId>com.google.code.gson</groupId>
+            <version>2.8.6</version>
+        </dependency>
+        <dependency>
             <groupId>org.apache.dubbo.extensions</groupId>
             <artifactId>dubbo-serialization-protobuf</artifactId>
             <version>1.0.0</version>
+            <exclusions>
+                <exclusion>
+                    <artifactId>gson</artifactId>
+                    <groupId>com.google.code.gson</groupId>
+                </exclusion>
+            </exclusions>
         </dependency>
         <dependency>
             <groupId>org.apache.dubbo.extensions</groupId>
@@ -67,6 +78,12 @@
         <dependency>
             <groupId>org.apache.dubbo</groupId>
             <artifactId>dubbo-common</artifactId>
+            <exclusions>
+                <exclusion>
+                    <artifactId>gson</artifactId>
+                    <groupId>com.google.code.gson</groupId>
+                </exclusion>
+            </exclusions>
         </dependency>
     </dependencies>
 </project>