diff --git a/CHANGELOG_DEV.md b/CHANGELOG_DEV.md
index 1fa78383ac..eea1bf169b 100644
--- a/CHANGELOG_DEV.md
+++ b/CHANGELOG_DEV.md
@@ -1,77 +1,2 @@
-1.8.0 (Unreleased)
+1.9.0-beta.1 (Unreleased)
 --------------------------------
-
-- Fix #4893: Richtext extension events are ignored when using deprecated maxLength option
-- Fix #4896: Error thrown if live poll broadcast focus event is triggered
-- Fix #4907: Positions of Comment / Like links under posts
-- Fix #4911: Auto logout user on maintenance mode
-- Fix #4912: Restrict guest access on maintenance mode
-- Fix #4918: Comment richtext gets focused when closing comment section
-
-
-1.8.0-beta.2 (February 18, 2021)
---------------------------------
-
-- Fix #4853: Removed obsolete Group::getSpace() relation
-- Fix #4828: Display default permissions of all modules even if they are deactivated by default
-- Fix #4841: Fix misplaced notification filters
-- Fix #4842: Prerequisites Test - Improved database version detection for MariaDB
-- Fix #4850: New AuthClient method onSuccessLogin() not available on standard OAuths 
-- Fix #4856: Allow to invite users to space with pending membership application
-- Fix #4869: Fix cached comment content in email notification
-- Fix #4857: Fix wrong content id on building cache key
-- Fix #4838: ProsemirrorRichText::replaceLinkExtension() not compatible with HumHub < 1.8
-- Fix #4847: RichText::postProcess(null) throws error 
-- Fix #4886: Improved styling of aligned richtext images
-- Fix #4891: Typo 'charachters' in chooser message
-
-
-1.8.0-beta.1 (February 4, 2021)
--------------------------------
-
-- Enh #3996: Force password change on first log in for users created by admin
-- Enh #3996: Allow admin to change option "Must change password" for existing users
-- Enh #3414: Allow to change user passwords by admin
-- Enh #4543: Order members by newest in `about` page
-- Enh #4347: Add `hideMembersSidebar` to make members sidebar optional in space stream page
-- Enh #4585: Group notifications must be enabled explicitly
-- Fix #4646: Clean up duplicated array keys
-- Enh #242: Allow multiple default spaces for groups
-- Enh #4670: Editable default permissions for Content Containers(Space and User)
-- Enh #48: Improve "Admin Can View All" Feature
-- Fix #4692: Fix visibility of the button "Add new space"
-- Enh #4579: Optimized dashboard stream query
-- Enh #4579: Optimized live legitimation id queries
-- Enh #4579: Added `dashboard\Module::$guestFilterClass` and `$memberFilterClass` to replace dashboard filter class
-- Enh #4586: Rebuild group default Space Mapping
-- Enh #4225: Delete open/pending registration invites automatically after a period of time
-- Fix #4718: Fix space or profile banner size after crop
-- Enh #4738: Allow CanComment permission also on profile level
-- Enh #4511: Default group for users who are not assigned to any other group
-- Enh #4749: Add Migration helper to determine installation state
-- Enh #4611: Added console command to display LDAP attributes of a user
-- Enh #4750: OAuth: Automatically link OAuth Account with same e-mail address
-- Enh #4706: Marketplace: Possibility to prohibit modules via the configuration
-- Enh #4770: Added CLI commands for Professional Edition licence management
-- Enh #4752: Added file column `hash_sha1` to avoid caching problems
-- Enh #3345: Maintenance mode
-- Enh #4751: Hide separator between widgets `LikeLink` and `CommentLink`
-- Enh #4751: New `ContentObjectLinks` widget for the detail views of module content
-- Enh #4754: Shorten high member numbers
-- Enh #4781: Change allowed characters in username
-- Enh #4416: Added reply to sub comments
-- Enh #4571: humhub/libs/Html::containerLink() now adds a "data-guid" attribute
-- Enh #4791: Delay failed login attempts
-- Enh #4787: Always enable Space Membership Web Notifications
-- Enh #4795: Added support for collapsible form fields
-- Enh #4796: Added option to disable PWA/ServiceWorker support
-- Enh #4808: Improved richtext styles
-- Fix #4752: Fix saving hash of a deleted file from disk
-- Enh #4671: Implemented live poll result sharing by BroadCastChannel
-- Enh #4829: Renamed account "Security" page and make it optional
-- Enh #4818: Added database related checks (Driver, Collation, Table Engine)
-- Fix #4831: Validate username by pattern only on change or for new users
-- Fix #3662: Encoding issues in mails
-- Enh #4686: Implemented richtext converter to following formats: plaintext, shorttext, html, plain markdown
-- Enh #4686: Enhanced richtext extension API for convterting and post-processing
-- Enh #4686: Added caching mechanism for richtext converter results
diff --git a/protected/humhub/config/common.php b/protected/humhub/config/common.php
index 0ec7c5853b..de5957d020 100644
--- a/protected/humhub/config/common.php
+++ b/protected/humhub/config/common.php
@@ -24,7 +24,7 @@ if (!defined('PKCS7_DETACHED')) {
 
 $config = [
     'name' => 'HumHub',
-    'version' => '1.8.0',
+    'version' => '1.9.0-dev',
     'basePath' => dirname(__DIR__) . DIRECTORY_SEPARATOR . '..' . DIRECTORY_SEPARATOR,
     'bootstrap' => ['log', 'humhub\components\bootstrap\ModuleAutoLoader', 'queue', 'humhub\modules\ui\view\bootstrap\ThemeLoader'],
     'sourceLanguage' => 'en',