diff --git a/VERSION b/VERSION
index ee9752d2e6..c0d71d8545 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-2023.09-rc
+2023.12
diff --git a/database.sql b/database.sql
index 81082cb38e..f114bb5bfd 100644
--- a/database.sql
+++ b/database.sql
@@ -1,5 +1,5 @@
 -- ------------------------------------------
--- Friendica 2023.09-rc (Giant Rhubarb)
+-- Friendica 2023.12 (Yellow archangel)
 -- DB_UPDATE_VERSION 1542
 -- ------------------------------------------
 
diff --git a/security.txt b/security.txt
index 5795051d0a..d3adcec347 100644
--- a/security.txt
+++ b/security.txt
@@ -1,6 +1,6 @@
 Contact: mailto:info@friendi.ca
 
-Expires: 2024-04-30T23:59:59Z
+Expires: 2024-10-30T23:59:59Z
 
 Preferred-Languages: en
 
diff --git a/src/App.php b/src/App.php
index e697c3bb65..a01a6bc6c8 100644
--- a/src/App.php
+++ b/src/App.php
@@ -63,8 +63,8 @@ use Psr\Log\LoggerInterface;
 class App
 {
 	const PLATFORM = 'Friendica';
-	const CODENAME = 'Giant Rhubarb';
-	const VERSION  = '2023.09-rc';
+	const CODENAME = 'Yellow Archangel';
+	const VERSION  = '2023.12';
 
 	// Allow themes to control internal parameters
 	// by changing App values in theme.php