diff --git a/CHANGELOG b/CHANGELOG
index 37cf82f5d2..49c15aa1e2 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,10 @@
+Version 2024.09 (unreleased)
+  Friendica Core
+
+  Friendica Addons
+
+  Closed Issues
+
 Version 2024.08 (2024-08-17)
   Friendica Core
     Updates to the translations AR, CS, DE, ES, FR, GD, HU, IS, IT, JA, NL, PL, RU, SV
diff --git a/VERSION b/VERSION
index a4d5b61769..17fb4fb56b 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-2024.08
+2024.09-dev
diff --git a/database.sql b/database.sql
index 057d85bf26..acb9a861de 100644
--- a/database.sql
+++ b/database.sql
@@ -1,5 +1,5 @@
 -- ------------------------------------------
--- Friendica 2024.08 (Yellow Archangel)
+-- Friendica 2024.09-dev (Yellow Archangel)
 -- DB_UPDATE_VERSION 1571
 -- ------------------------------------------
 
diff --git a/src/App.php b/src/App.php
index 56f72835eb..9a3521729e 100644
--- a/src/App.php
+++ b/src/App.php
@@ -65,7 +65,7 @@ class App
 {
 	const PLATFORM = 'Friendica';
 	const CODENAME = 'Yellow Archangel';
-	const VERSION  = '2024.08';
+	const VERSION  = '2024.09-dev';
 
 	// Allow themes to control internal parameters
 	// by changing App values in theme.php
diff --git a/view/lang/C/messages.po b/view/lang/C/messages.po
index 504c702372..22a5f2607b 100644
--- a/view/lang/C/messages.po
+++ b/view/lang/C/messages.po
@@ -6,7 +6,7 @@
 #, fuzzy
 msgid ""
 msgstr ""
-"Project-Id-Version: 2024.08\n"
+"Project-Id-Version: 2024.09-dev\n"
 "Report-Msgid-Bugs-To: \n"
 "POT-Creation-Date: 2024-08-11 06:43+0000\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"