diff --git a/bitcoin-qt.pro b/bitcoin-qt.pro
index 6b1fb7f6c..834e31158 100644
--- a/bitcoin-qt.pro
+++ b/bitcoin-qt.pro
@@ -1,5 +1,6 @@
 TEMPLATE = app
 TARGET =
+VERSION = 0.5.0
 INCLUDEPATH += src src/json src/qt
 DEFINES += QT_GUI
 CONFIG += no_include_pwd
diff --git a/share/setup.nsi b/share/setup.nsi
index 4c837c974..2f2eeaa78 100644
--- a/share/setup.nsi
+++ b/share/setup.nsi
@@ -5,7 +5,7 @@ SetCompressor /SOLID lzma
 
 # General Symbol Definitions
 !define REGKEY "SOFTWARE\$(^Name)"
-!define VERSION 0.4.1
+!define VERSION 0.5.0
 !define COMPANY "Bitcoin project"
 !define URL http://www.bitcoin.org/
 
@@ -20,7 +20,7 @@ SetCompressor /SOLID lzma
 !define MUI_STARTMENUPAGE_REGISTRY_KEY ${REGKEY}
 !define MUI_STARTMENUPAGE_REGISTRY_VALUENAME StartMenuGroup
 !define MUI_STARTMENUPAGE_DEFAULTFOLDER Bitcoin
-!define MUI_FINISHPAGE_RUN $INSTDIR\bitcoin.exe
+!define MUI_FINISHPAGE_RUN $INSTDIR\bitcoin-qt.exe
 !define MUI_UNICON "${NSISDIR}\Contrib\Graphics\Icons\modern-uninstall.ico"
 !define MUI_UNWELCOMEFINISHPAGE_BITMAP "../share/pixmaps/nsis-wizard.bmp"
 !define MUI_UNFINISHPAGE_NOAUTOCLOSE
@@ -45,13 +45,13 @@ Var StartMenuGroup
 !insertmacro MUI_LANGUAGE English
 
 # Installer attributes
-OutFile bitcoin-0.4.1-win32-setup.exe
+OutFile bitcoin-0.5.0-win32-setup.exe
 InstallDir $PROGRAMFILES\Bitcoin
 CRCCheck on
 XPStyle on
 BrandingText " "
 ShowInstDetails show
-VIProductVersion 0.4.1.0
+VIProductVersion 0.5.0.0
 VIAddVersionKey ProductName Bitcoin
 VIAddVersionKey ProductVersion "${VERSION}"
 VIAddVersionKey CompanyName "${COMPANY}"
@@ -66,7 +66,7 @@ ShowUninstDetails show
 Section -Main SEC0000
     SetOutPath $INSTDIR
     SetOverwrite on
-    File ../src/bitcoin.exe
+    File ../bitcoin-qt.exe
     File /oname=license.txt ../COPYING
     File /oname=readme.txt ../doc/README_windows.txt
     SetOutPath $INSTDIR\daemon
@@ -85,7 +85,7 @@ Section -post SEC0001
     WriteUninstaller $INSTDIR\uninstall.exe
     !insertmacro MUI_STARTMENU_WRITE_BEGIN Application
     CreateDirectory $SMPROGRAMS\$StartMenuGroup
-    CreateShortcut "$SMPROGRAMS\$StartMenuGroup\Bitcoin.lnk" $INSTDIR\bitcoin.exe
+    CreateShortcut "$SMPROGRAMS\$StartMenuGroup\Bitcoin.lnk" $INSTDIR\bitcoin-qt.exe
     CreateShortcut "$SMPROGRAMS\$StartMenuGroup\Uninstall Bitcoin.lnk" $INSTDIR\uninstall.exe
     !insertmacro MUI_STARTMENU_WRITE_END
     WriteRegStr HKCU "SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\$(^Name)" DisplayName "$(^Name)"
@@ -113,7 +113,7 @@ done${UNSECTION_ID}:
 
 # Uninstaller sections
 Section /o -un.Main UNSEC0000
-    Delete /REBOOTOK $INSTDIR\bitcoin.exe
+    Delete /REBOOTOK $INSTDIR\bitcoin-qt.exe
     Delete /REBOOTOK $INSTDIR\license.txt
     Delete /REBOOTOK $INSTDIR\readme.txt
     RMDir /r /REBOOTOK $INSTDIR\daemon
diff --git a/src/serialize.h b/src/serialize.h
index 396594cf7..beb87f1d0 100644
--- a/src/serialize.h
+++ b/src/serialize.h
@@ -60,7 +60,7 @@ class CDataStream;
 class CAutoFile;
 static const unsigned int MAX_SIZE = 0x02000000;
 
-static const int VERSION = 40100;
+static const int VERSION = 50000;
 static const char* pszSubVer = "";
 static const bool VERSION_IS_BETA = true;