diff --git a/pom.xml b/pom.xml
index 170546a..7378899 100644
--- a/pom.xml
+++ b/pom.xml
@@ -32,7 +32,7 @@
 
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <pbuf.version>3.4.0</pbuf.version>
+        <pbuf.version>[3.16.3]</pbuf.version>
         <socket.port>55444</socket.port>
         <target.java.version>1.7</target.java.version>
         <plugin.checkstyle.version>2.15</plugin.checkstyle.version>
@@ -114,7 +114,7 @@
         <dependency>
             <groupId>com.google.protobuf</groupId>
             <artifactId>protobuf-java</artifactId>
-            <version>[${pbuf.version}]</version>
+            <version>[${pbuf.version}</version>
         </dependency>
 
         <dependency>