diff --git a/lib/components/dictionary.js b/lib/components/dictionary.js
index 725e017f2..58fd6b339 100644
--- a/lib/components/dictionary.js
+++ b/lib/components/dictionary.js
@@ -3,6 +3,7 @@ var path = require('path');
 var utils = require('../util/utils');
 var Loader = require('pomelo-loader');
 var pathUtil = require('../util/pathUtil');
+var crypto = require('crypto');
 
 module.exports = function(app, opts) {
   return new Component(app, opts);
@@ -13,6 +14,7 @@ var Component = function(app, opts) {
   this.dict = {};
   this.abbrs = {};
   this.userDicPath = null;
+  this.version = "";
 
   //Set user dictionary
   var p = path.join(app.getBase(), '/config/dictionary.json');
@@ -74,6 +76,9 @@ pro.start = function(cb) {
       abbr++;
     }
   }
+  
+  this.version = crypto.createHash('md5').update(JSON.stringify(this.dict)).digest('hex');
+
   utils.invokeCallback(cb);
 };
 
@@ -83,4 +88,8 @@ pro.getDict = function() {
 
 pro.getAbbrs = function() {
   return this.abbrs;
-};
\ No newline at end of file
+};
+
+pro.getVersion = function() {
+  return this.version;
+};
diff --git a/lib/connectors/commands/handshake.js b/lib/connectors/commands/handshake.js
index 7b3a9b1f6..7eca68b90 100644
--- a/lib/connectors/commands/handshake.js
+++ b/lib/connectors/commands/handshake.js
@@ -44,7 +44,11 @@ Command.prototype.handle = function(socket, msg) {
   };
 
   if(this.useDict) {
-    opts.dict = pomelo.app.components.__dictionary__.getDict();
+    var dictVersion = pomelo.app.components.__dictionary__.getVersion();
+    if(!msg.sys.dictVersion || msg.sys.dictVersion !== dictVersion){
+      opts.dict = pomelo.app.components.__dictionary__.getDict();
+      opts.dict.version = dictVersion;
+    }
   }
 
   if(this.useProtobuf) {