diff --git a/PCbuild/BUILDno.txt b/PCbuild/BUILDno.txt
index 3effcad..093065f 100644
--- a/PCbuild/BUILDno.txt
+++ b/PCbuild/BUILDno.txt
@@ -33,6 +33,8 @@
 
 Windows Python BUILD numbers
 ----------------------------
+  54    2.4.0a1
+        8-Jul-2004
   53    2.3.4 (final)
         27-May-2004
   52    2.3.4c1
diff --git a/PCbuild/pythoncore.vcproj b/PCbuild/pythoncore.vcproj
index e7673d1..02b3ef5 100644
--- a/PCbuild/pythoncore.vcproj
+++ b/PCbuild/pythoncore.vcproj
@@ -1022,7 +1022,7 @@
 					Name="VCCLCompilerTool"
 					Optimization="2"
 					AdditionalIncludeDirectories=""
-					PreprocessorDefinitions="BUILD=46"/>
+					PreprocessorDefinitions="BUILD=54"/>
 			</FileConfiguration>
 			<FileConfiguration
 				Name="Debug|Win32">
@@ -1030,7 +1030,7 @@
 					Name="VCCLCompilerTool"
 					Optimization="0"
 					AdditionalIncludeDirectories=""
-					PreprocessorDefinitions="BUILD=47"/>
+					PreprocessorDefinitions="BUILD=54"/>
 			</FileConfiguration>
 		</File>
 		<File