diff --git a/app/js/app.js b/app/js/app.js
index 3ce86682..87372ba5 100644
--- a/app/js/app.js
+++ b/app/js/app.js
@@ -1,5 +1,5 @@
 /*!
- * Webogram v0.5.0 - messaging web application for MTProto
+ * Webogram v0.5.1 - messaging web application for MTProto
  * https://github.com/zhukov/webogram
  * Copyright (C) 2014 Igor Zhukov <igor.beatle@gmail.com>
  * https://github.com/zhukov/webogram/blob/master/LICENSE
diff --git a/app/js/background.js b/app/js/background.js
index 98edc61f..662e4ffd 100644
--- a/app/js/background.js
+++ b/app/js/background.js
@@ -1,5 +1,5 @@
 /*!
- * Webogram v0.5.0 - messaging web application for MTProto
+ * Webogram v0.5.1 - messaging web application for MTProto
  * https://github.com/zhukov/webogram
  * Copyright (C) 2014 Igor Zhukov <igor.beatle@gmail.com>
  * https://github.com/zhukov/webogram/blob/master/LICENSE
diff --git a/app/js/controllers.js b/app/js/controllers.js
index ff099314..1a9dd14b 100644
--- a/app/js/controllers.js
+++ b/app/js/controllers.js
@@ -1,5 +1,5 @@
 /*!
- * Webogram v0.5.0 - messaging web application for MTProto
+ * Webogram v0.5.1 - messaging web application for MTProto
  * https://github.com/zhukov/webogram
  * Copyright (C) 2014 Igor Zhukov <igor.beatle@gmail.com>
  * https://github.com/zhukov/webogram/blob/master/LICENSE
diff --git a/app/js/directives.js b/app/js/directives.js
index 7c4d5c8c..a33afcdf 100755
--- a/app/js/directives.js
+++ b/app/js/directives.js
@@ -1,5 +1,5 @@
 /*!
- * Webogram v0.5.0 - messaging web application for MTProto
+ * Webogram v0.5.1 - messaging web application for MTProto
  * https://github.com/zhukov/webogram
  * Copyright (C) 2014 Igor Zhukov <igor.beatle@gmail.com>
  * https://github.com/zhukov/webogram/blob/master/LICENSE
diff --git a/app/js/directives_mobile.js b/app/js/directives_mobile.js
index d8cd535a..381e7e71 100644
--- a/app/js/directives_mobile.js
+++ b/app/js/directives_mobile.js
@@ -1,5 +1,5 @@
 /*!
- * Webogram v0.5.0 - messaging web application for MTProto
+ * Webogram v0.5.1 - messaging web application for MTProto
  * https://github.com/zhukov/webogram
  * Copyright (C) 2014 Igor Zhukov <igor.beatle@gmail.com>
  * https://github.com/zhukov/webogram/blob/master/LICENSE
diff --git a/app/js/filters.js b/app/js/filters.js
index 4812696f..06c2b4e7 100644
--- a/app/js/filters.js
+++ b/app/js/filters.js
@@ -1,5 +1,5 @@
 /*!
- * Webogram v0.5.0 - messaging web application for MTProto
+ * Webogram v0.5.1 - messaging web application for MTProto
  * https://github.com/zhukov/webogram
  * Copyright (C) 2014 Igor Zhukov <igor.beatle@gmail.com>
  * https://github.com/zhukov/webogram/blob/master/LICENSE
diff --git a/app/js/lib/bin_utils.js b/app/js/lib/bin_utils.js
index 476d2698..9cd17475 100644
--- a/app/js/lib/bin_utils.js
+++ b/app/js/lib/bin_utils.js
@@ -1,5 +1,5 @@
 /*!
- * Webogram v0.5.0 - messaging web application for MTProto
+ * Webogram v0.5.1 - messaging web application for MTProto
  * https://github.com/zhukov/webogram
  * Copyright (C) 2014 Igor Zhukov <igor.beatle@gmail.com>
  * https://github.com/zhukov/webogram/blob/master/LICENSE
diff --git a/app/js/lib/config.js b/app/js/lib/config.js
index 57cc215c..b5f64b03 100644
--- a/app/js/lib/config.js
+++ b/app/js/lib/config.js
@@ -1,5 +1,5 @@
 /*!
- * Webogram v0.5.0 - messaging web application for MTProto
+ * Webogram v0.5.1 - messaging web application for MTProto
  * https://github.com/zhukov/webogram
  * Copyright (C) 2014 Igor Zhukov <igor.beatle@gmail.com>
  * https://github.com/zhukov/webogram/blob/master/LICENSE
@@ -21,7 +21,7 @@ Config = window.Config || {};
 Config.App = {
   id: 2496,
   hash: '8da85b0d5bfe62527e5b244c209159c3',
-  version: '0.5.0',
+  version: '0.5.1',
   domains: ['web.telegram.org', 'zhukov.github.io']
 };
 
diff --git a/app/js/lib/crypto_worker.js b/app/js/lib/crypto_worker.js
index d010609b..a80f37ab 100644
--- a/app/js/lib/crypto_worker.js
+++ b/app/js/lib/crypto_worker.js
@@ -1,5 +1,5 @@
 /*!
- * Webogram v0.5.0 - messaging web application for MTProto
+ * Webogram v0.5.1 - messaging web application for MTProto
  * https://github.com/zhukov/webogram
  * Copyright (C) 2014 Igor Zhukov <igor.beatle@gmail.com>
  * https://github.com/zhukov/webogram/blob/master/LICENSE
diff --git a/app/js/lib/mtproto.js b/app/js/lib/mtproto.js
index 98794306..45f6d869 100644
--- a/app/js/lib/mtproto.js
+++ b/app/js/lib/mtproto.js
@@ -1,5 +1,5 @@
 /*!
- * Webogram v0.5.0 - messaging web application for MTProto
+ * Webogram v0.5.1 - messaging web application for MTProto
  * https://github.com/zhukov/webogram
  * Copyright (C) 2014 Igor Zhukov <igor.beatle@gmail.com>
  * https://github.com/zhukov/webogram/blob/master/LICENSE
diff --git a/app/js/lib/mtproto_wrapper.js b/app/js/lib/mtproto_wrapper.js
index 1fecd851..e5048426 100644
--- a/app/js/lib/mtproto_wrapper.js
+++ b/app/js/lib/mtproto_wrapper.js
@@ -1,5 +1,5 @@
 /*!
- * Webogram v0.5.0 - messaging web application for MTProto
+ * Webogram v0.5.1 - messaging web application for MTProto
  * https://github.com/zhukov/webogram
  * Copyright (C) 2014 Igor Zhukov <igor.beatle@gmail.com>
  * https://github.com/zhukov/webogram/blob/master/LICENSE
diff --git a/app/js/lib/ng_utils.js b/app/js/lib/ng_utils.js
index 171abad6..041fd835 100644
--- a/app/js/lib/ng_utils.js
+++ b/app/js/lib/ng_utils.js
@@ -1,5 +1,5 @@
 /*!
- * Webogram v0.5.0 - messaging web application for MTProto
+ * Webogram v0.5.1 - messaging web application for MTProto
  * https://github.com/zhukov/webogram
  * Copyright (C) 2014 Igor Zhukov <igor.beatle@gmail.com>
  * https://github.com/zhukov/webogram/blob/master/LICENSE
diff --git a/app/js/lib/tl_utils.js b/app/js/lib/tl_utils.js
index 12be9f69..1ac27c02 100644
--- a/app/js/lib/tl_utils.js
+++ b/app/js/lib/tl_utils.js
@@ -1,5 +1,5 @@
 /*!
- * Webogram v0.5.0 - messaging web application for MTProto
+ * Webogram v0.5.1 - messaging web application for MTProto
  * https://github.com/zhukov/webogram
  * Copyright (C) 2014 Igor Zhukov <igor.beatle@gmail.com>
  * https://github.com/zhukov/webogram/blob/master/LICENSE
diff --git a/app/js/lib/utils.js b/app/js/lib/utils.js
index c1640d68..358eab75 100644
--- a/app/js/lib/utils.js
+++ b/app/js/lib/utils.js
@@ -1,5 +1,5 @@
 /*!
- * Webogram v0.5.0 - messaging web application for MTProto
+ * Webogram v0.5.1 - messaging web application for MTProto
  * https://github.com/zhukov/webogram
  * Copyright (C) 2014 Igor Zhukov <igor.beatle@gmail.com>
  * https://github.com/zhukov/webogram/blob/master/LICENSE
diff --git a/app/js/message_composer.js b/app/js/message_composer.js
index 4ed59fe6..0d8136e0 100644
--- a/app/js/message_composer.js
+++ b/app/js/message_composer.js
@@ -1,5 +1,5 @@
 /*!
- * Webogram v0.5.0 - messaging web application for MTProto
+ * Webogram v0.5.1 - messaging web application for MTProto
  * https://github.com/zhukov/webogram
  * Copyright (C) 2014 Igor Zhukov <igor.beatle@gmail.com>
  * https://github.com/zhukov/webogram/blob/master/LICENSE
diff --git a/app/js/messages_manager.js b/app/js/messages_manager.js
index 698f2766..085c3c5c 100644
--- a/app/js/messages_manager.js
+++ b/app/js/messages_manager.js
@@ -1,5 +1,5 @@
 /*!
- * Webogram v0.5.0 - messaging web application for MTProto
+ * Webogram v0.5.1 - messaging web application for MTProto
  * https://github.com/zhukov/webogram
  * Copyright (C) 2014 Igor Zhukov <igor.beatle@gmail.com>
  * https://github.com/zhukov/webogram/blob/master/LICENSE
diff --git a/app/js/services.js b/app/js/services.js
index b2cda423..30187d63 100755
--- a/app/js/services.js
+++ b/app/js/services.js
@@ -1,5 +1,5 @@
 /*!
- * Webogram v0.5.0 - messaging web application for MTProto
+ * Webogram v0.5.1 - messaging web application for MTProto
  * https://github.com/zhukov/webogram
  * Copyright (C) 2014 Igor Zhukov <igor.beatle@gmail.com>
  * https://github.com/zhukov/webogram/blob/master/LICENSE
diff --git a/app/manifest.json b/app/manifest.json
index f2955766..8c537e8d 100644
--- a/app/manifest.json
+++ b/app/manifest.json
@@ -1,7 +1,7 @@
 {
   "name": "Telegram",
   "description": "Telegram Web App.\nMore info & source code here: https://github.com/zhukov/webogram",
-  "version": "0.5.0",
+  "version": "0.5.1",
   "short_name": "Telegram",
   "manifest_version": 2,
   "app": {
diff --git a/app/manifest.webapp b/app/manifest.webapp
index 429d032d..1afa5332 100644
--- a/app/manifest.webapp
+++ b/app/manifest.webapp
@@ -1,7 +1,7 @@
 {
   "name": "Telegram",
   "description": "Telegram Web App.\nMore info & source code here: https://github.com/zhukov/webogram",
-  "version": "0.5.0",
+  "version": "0.5.1",
   "type": "privileged",
   "launch_path": "/index.html",
   "developer": {
diff --git a/app/partials/desktop/changelog_modal.html b/app/partials/desktop/changelog_modal.html
index 46c643d8..abdb70f4 100644
--- a/app/partials/desktop/changelog_modal.html
+++ b/app/partials/desktop/changelog_modal.html
@@ -31,6 +31,15 @@
 
     <div class="md_modal_sections">
 
+      <div class="md_modal_versioned_section_wrap" ng-if="canShowVersion('0.5.1')">
+        <div class="md_modal_section_version">0.5.1</div>
+        <div class="md_modal_section_description changelog_version_changes">
+          <ul class="list-unstyled changelog_version_changes_list">
+            <li>Groups that have reached their capacity of 200 users can be upgraded to supergroups of up to 1,000 members.</li>
+          </ul>
+        </div>
+      </div>
+
       <div class="md_modal_versioned_section_wrap" ng-if="canShowVersion('0.5.0')">
         <div class="md_modal_section_version">0.5.0</div>
         <div class="md_modal_section_description changelog_version_changes">
diff --git a/app/partials/mobile/changelog_modal.html b/app/partials/mobile/changelog_modal.html
index fe687f23..ebaf8a9b 100644
--- a/app/partials/mobile/changelog_modal.html
+++ b/app/partials/mobile/changelog_modal.html
@@ -17,11 +17,23 @@
 
     <div class="changelog_versions_wrap">
 
+      <div class="modal_section changelog_version_wrap">
+        <h3 class="modal_section_header changelog_version_title">
+          Version 0.5.1
+          <span class="pull-right" my-i18n="changelog_modal_title_current_version"></span>
+        </h3>
+        <div class="modal_section_body changelog_version_changes">
+          <ul class="list-unstyled changelog_version_changes_list">
+            <li>Groups that have reached their capacity of 200 users can be upgraded to supergroups of up to 1,000 members.</li>
+            <li>[Mobile] Supported web page previews.</li>
+          </ul>
+        </div>
+      </div>
+
 
       <div class="modal_section changelog_version_wrap">
         <h3 class="modal_section_header changelog_version_title">
           Version 0.5.0
-          <span class="pull-right" my-i18n="changelog_modal_title_current_version"></span>
         </h3>
         <div class="modal_section_body changelog_version_changes">
           <ul class="list-unstyled changelog_version_changes_list">
diff --git a/package.json b/package.json
index c71258a1..95f4a543 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "Telegram",
   "description": "Telegram Web App.\nMore info & source code here: https://github.com/zhukov/webogram",
-  "version": "0.5.0",
+  "version": "0.5.1",
   "main": "app/index.html",
   "single-instance": true,
   "dom_storage_quota": 40,