diff --git a/changelog.txt b/changelog.txt
index 92fd2ca65b..e52ea45dbd 100644
--- a/changelog.txt
+++ b/changelog.txt
@@ -1,3 +1,8 @@
+1.2.3 (2012-11-01)
+------------------------------------------------------------------------
+(None)
+
+
 1.2.3-RC1 (2012-10-17)
 ------------------------------------------------------------------------
 - Change: [NewGRF] Set the reference brightness of 32bpp mask recolouring to 128 (r24610)
diff --git a/os/debian/changelog b/os/debian/changelog
index d0f6b1e6de..5b035455d4 100644
--- a/os/debian/changelog
+++ b/os/debian/changelog
@@ -1,3 +1,9 @@
+openttd (1.2.3) unstable; urgency=low
+
+  * New upstream release 1.2.3
+
+ -- Matthijs Kooijman <matthijs@stdin.nl>  Thu, 01 Nov 2012 00:00:00 +0200
+
 openttd (1.2.3~RC1) unstable; urgency=low
 
   * New upstream release 1.2.3-RC1
diff --git a/os/windows/installer/install.nsi b/os/windows/installer/install.nsi
index e0f256422e..4874e07cd9 100644
--- a/os/windows/installer/install.nsi
+++ b/os/windows/installer/install.nsi
@@ -2,8 +2,8 @@
 !define APPV_MAJOR 1
 !define APPV_MINOR 2
 !define APPV_MAINT 3
-!define APPV_BUILD 0
-!define APPV_EXTRA "-RC1"
+!define APPV_BUILD 4
+!define APPV_EXTRA ""
 
 !define APPNAME "OpenTTD"   ; Define application name
 !define APPVERSION "${APPV_MAJOR}.${APPV_MINOR}.${APPV_MAINT}${APPV_EXTRA}"  ; Define application version
diff --git a/readme.txt b/readme.txt
index 0dcdc8b11a..b6cc31dabd 100644
--- a/readme.txt
+++ b/readme.txt
@@ -1,6 +1,6 @@
 OpenTTD readme
-Last updated:    2012-10-17
-Release version: 1.2.3-RC1
+Last updated:    2012-11-01
+Release version: 1.2.3
 ------------------------------------------------------------------------
 
 
@@ -650,6 +650,7 @@ The OpenTTD team (in alphabetical order):
   Zdeněk Sojka (SmatZ)            - Bug finder and fixer
   José Soler (Terkhen)            - General coding
   Thijs Marinussen (Yexo)         - AI Framework
+  Leif Linse (Zuu)                - AI/Game Script
 
 Inactive Developers:
   Bjarni Corfitzen (Bjarni)       - MacOSX port, coder and vehicles