diff --git a/Include/patchlevel.h b/Include/patchlevel.h
index a295f5eba2ec..d480e01f6056 100644
--- a/Include/patchlevel.h
+++ b/Include/patchlevel.h
@@ -22,11 +22,11 @@
 #define PY_MAJOR_VERSION	2
 #define PY_MINOR_VERSION	3
 #define PY_MICRO_VERSION	0
-#define PY_RELEASE_LEVEL	PY_RELEASE_LEVEL_BETA
-#define PY_RELEASE_SERIAL	2
+#define PY_RELEASE_LEVEL	PY_RELEASE_LEVEL_GAMMA
+#define PY_RELEASE_SERIAL	1
 
 /* Version as a string */
-#define PY_VERSION		"2.3b2+"
+#define PY_VERSION		"2.3c1"
 
 /* Version as a single 4-byte hex number, e.g. 0x010502B2 == 1.5.2b2.
    Use this for numeric comparisons, e.g. #if PY_VERSION_HEX >= ... */
diff --git a/PC/python_nt.rc b/PC/python_nt.rc
index a3a927d42863..45a921db5045 100644
--- a/PC/python_nt.rc
+++ b/PC/python_nt.rc
@@ -33,14 +33,14 @@
  * but that neither gives an error nor comes anywhere close to working.  The
  * following comment and #define are output from PCbuild\field3.py:
  *
- * For 2.3b2,
+ * For 2.3c1,
  * PY_MICRO_VERSION = 0
- * PY_RELEASE_LEVEL = 'beta' = 0xb
- * PY_RELEASE_SERIAL = 2
+ * PY_RELEASE_LEVEL = 'candidate' = 0xc
+ * PY_RELEASE_SERIAL = 1
  *
- * and 0*1000 + 11*10 + 2 = 112
+ * and 0*1000 + 12*10 + 1 = 121
  */
-#define FIELD3 112
+#define FIELD3 121
 
 /* e.g., 2.1a2
  * PY_VERSION comes from patchevel.h
diff --git a/PCbuild/BUILDno.txt b/PCbuild/BUILDno.txt
index 3e094ce82c8b..5663c7c9dc0b 100644
--- a/PCbuild/BUILDno.txt
+++ b/PCbuild/BUILDno.txt
@@ -33,6 +33,8 @@ How to change the Windows build number:
 
 Windows Python BUILD numbers
 ----------------------------
+  44    2.3c1
+        17-Jul-2003
   43    2.3b2
         29-Jun-2003
   42    2.2.3 (final)
diff --git a/PCbuild/python20.wse b/PCbuild/python20.wse
index f8bff0957a24..9cbbaaf2714d 100644
--- a/PCbuild/python20.wse
+++ b/PCbuild/python20.wse
@@ -1,7 +1,7 @@
 Document Type: WSE
 item: Global
   Version=8.14
-  Title=Python 2.3 beta 2
+  Title=Python 2.3 release candidate 1
   Flags=00010100
   Languages=65 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
   Japanese Font Name=MS Gothic
@@ -18,9 +18,9 @@ item: Global
   Patch Flags=0000000000001001
   Patch Threshold=85
   Patch Memory=4000
-  EXE Filename=Python-2.3b2.exe
+  EXE Filename=Python-2.3c1.exe
   Dialogs Version=8
-  Version File=2.3b2
+  Version File=2.3c1
   Version Description=Python Programming Language
   Version Copyright=©2001-2003 Python Software Foundation
   Version Company=PythonLabs at Zope Corporation
@@ -66,7 +66,7 @@ item: Global
 end
 item: Set Variable
   Variable=PYVER_STRING
-  Value=2.3b2
+  Value=2.3c1
 end
 item: Remark
 end
diff --git a/PCbuild/pythoncore.dsp b/PCbuild/pythoncore.dsp
index 9cd37858f9fe..10e743c13a2d 100644
--- a/PCbuild/pythoncore.dsp
+++ b/PCbuild/pythoncore.dsp
@@ -258,7 +258,7 @@ SOURCE=..\Python\getargs.c
 # Begin Source File
 
 SOURCE=..\Modules\getbuildinfo.c
-# ADD CPP /D BUILD=43
+# ADD CPP /D BUILD=44
 # End Source File
 # Begin Source File