diff --git a/chatworkHelper.js b/chatworkHelper.js
index 4614935..680db7f 100644
--- a/chatworkHelper.js
+++ b/chatworkHelper.js
@@ -2,7 +2,7 @@
 // @name         chatwork helper
 // @match        https://www.chatwork.com/*
 // @match        https://kcw.kddi.ne.jp/*
-// @version      1.5.5
+// @version      1.5.6
 /* load jQuery */
 // @require https://ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js
 // ==/UserScript==
diff --git a/manifest.json b/manifest.json
index cfa599d..c986546 100644
--- a/manifest.json
+++ b/manifest.json
@@ -1,7 +1,7 @@
 {
     "manifest_version": 2,
     "name": "chatwork helper",
-    "version": "1.5.5",
+    "version": "1.5.6",
     "homepage_url": "https://github.com/ryoichi-u/chatwork_helper",
     "content_scripts": [{
         "matches": [