diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0db217f..4e046d6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,37 @@
+## 0.4.0
+> Electron v1.2.6
+
+###### CHANGELOG
+
+- Added Audio support to Skype (read more [here](https://github.com/saenzramiro/rambox/wiki/Skype)).
+- Improvement syncronization with Firebase. No needs to clear your current services to start using it.
+- Fixed Open several tabs on click URL.
+- Added new services
+   - mysms
+   - ICQ
+   - TweetDeck
+   - Zinc
+   - FreeNode
+   - MightyText
+- Fixed bugs for editing services.
+- Moved option for *Adding Custom Service* to inside the list of services.
+- Added Reload and Open Dev Tools feature to each service by double click on the tab.
+- Fixed About Rambox.
+- Improved launch speed of the app.
+- New Save Window State feature.
+- Fixed blank flickering in some services.
+- Improved loading speed for services.
+- Added Keyboard Shortcuts (<kbd>Ctrl</kbd> + <kbd>Tab</kbd> and <kbd>Ctrl</kbd> + <kbd>Shift</kbd> + <kbd>Tab</kbd>) to navegate between tabs.
+- Added notes for services in Add new Service dialog if needs to clarify something.
+- Added descriptions to services, to help user know about each service.
+- Added Donate, Facebook, Twitter and Github buttons.
+- Better load spinner on launch.
+- Google Analytics integration (To know how many users are using the app, what services, don't disturb and lock
+options. That's all, don't freak out!).
+- Added new notification feature to notify user when is a new version available to download it manually.
+- And more bugs!
+
+
 ## 0.3.0
 > Electron v1.2.5