diff --git a/doc/README.md b/doc/README.md
index 3b1021d..80b655f 100644
--- a/doc/README.md
+++ b/doc/README.md
@@ -1,2 +1,2 @@
-* [User Guide](https://www.gitbook.io/book/88250/wide-user-guide)
-* [Developer Guide](https://www.gitbook.io/book/88250/wide-dev-guide)
+* [User Guide](https://www.gitbook.com/book/88250/wide-user-guide)
+* [Developer Guide](https://www.gitbook.com/book/88250/wide-dev-guide)
diff --git a/views/index.html b/views/index.html
index d9ecf99..d485142 100644
--- a/views/index.html
+++ b/views/index.html
@@ -333,7 +333,7 @@
                     <span>{{.i18n.help}}</span>
                     <div class="frame">
                         <ul>
-                            <li onclick="window.open('https://www.gitbook.io/book/88250/wide-user-guide')">
+                            <li onclick="window.open('https://www.gitbook.com/book/88250/wide-user-guide')">
                                 <span class="font-ico ico-book"></span>
                                 <span>{{.i18n.wide_doc}}</span>
                             </li>                            
diff --git a/views/login.html b/views/login.html
index 2064376..9fee0d2 100644
--- a/views/login.html
+++ b/views/login.html
@@ -22,7 +22,7 @@
                     <li><a href="/playground" target="_blank" style="color: #cd504a">Play</a></li>
                     <li><a rel="bookmark" href="https://github.com/b3log/wide" target="_blank">GitHub</a></li>
                     <li><a href="http://pan.baidu.com/s/1dD3XwOT" target="_blank">{{.i18n.download}}</a></li>
-                    <li><a rel="help" href="https://www.gitbook.io/book/88250/wide-user-guide" target="_blank">{{.i18n.help}}</a></li>
+                    <li><a rel="help" href="https://www.gitbook.com/book/88250/wide-user-guide" target="_blank">{{.i18n.help}}</a></li>
                     <li><a rel="bookmark" href="https://github.com/b3log/wide/issues/new" target="_blank">{{.i18n.issues}}</a></li>
                     <li><button class="btn btn-red" onclick="window.open('http://b3log.org/services')">{{.i18n.pricing}}</button></li>
                     <li><button class="btn" onclick="window.location.href = '/signup'">{{.i18n.sign_up}}</button></li>
diff --git a/views/sign_up.html b/views/sign_up.html
index 966067a..e450097 100644
--- a/views/sign_up.html
+++ b/views/sign_up.html
@@ -22,7 +22,7 @@
                     <li><a href="/playground" target="_blank" style="color: #cd504a">Play</a></li>
                     <li><a rel="bookmark" href="https://github.com/b3log/wide" target="_blank">GitHub</a></li>
                     <li><a href="http://pan.baidu.com/s/1dD3XwOT" target="_blank">{{.i18n.download}}</a></li>
-                    <li><a rel="help" href="https://www.gitbook.io/book/88250/wide-user-guide" target="_blank">{{.i18n.help}}</a></li>
+                    <li><a rel="help" href="https://www.gitbook.com/book/88250/wide-user-guide" target="_blank">{{.i18n.help}}</a></li>
                     <li><a rel="bookmark" href="https://github.com/b3log/wide/issues/new" target="_blank">{{.i18n.issues}}</a></li>
                     <li><button class="btn btn-red" onclick="window.open('http://b3log.org/services')">{{.i18n.pricing}}</button></li>
                     <li><button class="btn" onclick="window.location.href = '/login'">{{.i18n.login}}</button></li>
diff --git a/views/start.html b/views/start.html
index 553d5e5..b79561b 100644
--- a/views/start.html
+++ b/views/start.html
@@ -14,8 +14,8 @@
             <span>{{.workspace}}</span>
         </li>
         <li class="border">
-            <label><a href="http://88250.gitbooks.io/wide-user-guide" target="_blank">{{.i18n.user_guide}}</a></label>&nbsp;&nbsp;&nbsp;&nbsp;&amp;&nbsp;&nbsp;&nbsp;
-            <label><a href="http://88250.gitbooks.io/wide-dev-guide" target="_blank">{{.i18n.dev_guide}}</a></label>
+            <label><a href="https://www.gitbook.com/book/88250/wide-user-guide" target="_blank">{{.i18n.user_guide}}</a></label>&nbsp;&nbsp;&nbsp;&nbsp;&amp;&nbsp;&nbsp;&nbsp;
+            <label><a href="https://www.gitbook.com/book/88250/wide-dev-guide" target="_blank">{{.i18n.dev_guide}}</a></label>
         </li>
         <li>
             <label>{{.i18n.current_ver}}{{.i18n.colon}}</label>