diff --git a/client/src/AboutScene.js b/client/src/AboutScene.js
index e7e621f..d776b2d 100644
--- a/client/src/AboutScene.js
+++ b/client/src/AboutScene.js
@@ -4,7 +4,7 @@
             cc.director.runScene(new OptionScene());
         });
 
-        var text = "Myomyw Alpha 0.4\nCopyright © 2016 Infinideas";
+        var text = "Myomyw Alpha 0.5\nCopyright © 2016 Infinideas";
         var label = creator.createLabel(text, 20);
         label.setPosition(size.width / 2, size.height / 2);
         this.addChild(label)
diff --git a/client/src/player.js b/client/src/player.js
index f56f567..9a29ad7 100644
--- a/client/src/player.js
+++ b/client/src/player.js
@@ -18,7 +18,7 @@ var player = {
             if (xhr.readyState == 4 && xhr.status == 200) {
                 var response = xhr.responseText;
                 var data = JSON.parse(response);
-                if ("version" in data && "name" in data && data.version == "0.4") {
+                if ("version" in data && "name" in data && data.version == "0.5") {
                     player.name = name;
                     player.serverName = data.name;
                     player.guest = false;
diff --git a/server/package.json b/server/package.json
index 4c9846d..e5473fa 100644
--- a/server/package.json
+++ b/server/package.json
@@ -1,6 +1,6 @@
 {
   "name": "myomyw_server",
-  "version": "0.4.0",
+  "version": "0.5.0",
   "description": "Myomyw Server",
   "main": "src/server.js",
   "dependencies": {
diff --git a/server/src/config.js b/server/src/config.js
index 3b77029..7072305 100644
--- a/server/src/config.js
+++ b/server/src/config.js
@@ -3,7 +3,7 @@
     allowOrigin: '*',
     maxRooms: 100,
     serverName: 'A Myomyw Server',
-    version: '0.4',
+    version: '0.5',
 
     defaultLCol: 6,
     defaultRCol: 6,