diff --git a/pom.xml b/pom.xml
index 0354400..16ec049 100644
--- a/pom.xml
+++ b/pom.xml
@@ -17,8 +17,8 @@
 
     <licenses>
         <license>
-            <name />
-            <url />
+            <name/>
+            <url/>
             <distribution>repo</distribution>
             <comments>Copyright (C) Alibaba Cloud Computing. All rights reserved.</comments>
         </license>
@@ -71,7 +71,7 @@
         <dependency>
             <groupId>com.google.protobuf</groupId>
             <artifactId>protobuf-java</artifactId>
-            <version>2.5.0</version>
+            <version>3.4.0</version>
         </dependency>
         <dependency>
             <groupId>com.aliyun.openservices</groupId>