diff --git a/Include/patchlevel.h b/Include/patchlevel.h
index d9652a5..9fc6e97 100644
--- a/Include/patchlevel.h
+++ b/Include/patchlevel.h
@@ -18,12 +18,12 @@
 /*--start constants--*/
 #define PY_MAJOR_VERSION	3
 #define PY_MINOR_VERSION	1
-#define PY_MICRO_VERSION	4
-#define PY_RELEASE_LEVEL	PY_RELEASE_LEVEL_FINAL
-#define PY_RELEASE_SERIAL	0
+#define PY_MICRO_VERSION	5
+#define PY_RELEASE_LEVEL	PY_RELEASE_LEVEL_GAMMA
+#define PY_RELEASE_SERIAL	1
 
 /* Version as a string */
-#define PY_VERSION      	"3.1.4+"
+#define PY_VERSION      	"3.1.5rc1"
 /*--end constants--*/
 
 /* Subversion Revision number of this file (not of the repository). Empty
diff --git a/Lib/distutils/__init__.py b/Lib/distutils/__init__.py
index a3e2993..0e42762 100644
--- a/Lib/distutils/__init__.py
+++ b/Lib/distutils/__init__.py
@@ -15,5 +15,5 @@
 # Updated automatically by the Python release process.
 #
 #--start constants--
-__version__ = "3.1.4"
+__version__ = "3.1.5rc1"
 #--end constants--
diff --git a/Lib/idlelib/idlever.py b/Lib/idlelib/idlever.py
index 09f1b72..049da68 100644
--- a/Lib/idlelib/idlever.py
+++ b/Lib/idlelib/idlever.py
@@ -1 +1 @@
-IDLE_VERSION = "3.1.4"
+IDLE_VERSION = "3.1.5rc1"
diff --git a/Misc/NEWS b/Misc/NEWS
index 0d23663..07b981c 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -5,7 +5,7 @@
 What's New in Python 3.1.5?
 ===========================
 
-*Release date: XXXX-XX-XX*
+*Release date: 2012-02-23*
 
 Core and Builtins
 -----------------
diff --git a/Misc/RPM/python-3.1.spec b/Misc/RPM/python-3.1.spec
index 4215cbb..c89c1da 100644
--- a/Misc/RPM/python-3.1.spec
+++ b/Misc/RPM/python-3.1.spec
@@ -34,7 +34,7 @@
 
 %define name python
 #--start constants--
-%define version 3.1.4
+%define version 3.1.5rc1
 %define libvers 3.1
 #--end constants--
 %define release 1pydotorg
diff --git a/README b/README
index b136247..83b6871 100644
--- a/README
+++ b/README
@@ -1,4 +1,4 @@
-This is Python version 3.1.4
+This is Python version 3.1.5
 ============================
 
 Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010