--- a/os/win32/installer/install.nsi	Tue Apr 17 20:23:13 2007 +0000
+++ b/os/win32/installer/install.nsi	Tue Apr 17 21:08:05 2007 +0000
@@ -1,6 +1,6 @@
 !define APPNAME "OpenTTD"   ; Define application name
 !define APPVERSION "0.5.1"  ; Define application version
-!define INSTALLERVERSION 30 ; NEED TO UPDATE THIS FOR EVERY RELEASE!!!
+!define INSTALLERVERSION 31 ; NEED TO UPDATE THIS FOR EVERY RELEASE!!!
 
 !define APPURLLINK "http://www.openttd.org"
 !define APPNAMEANDVERSION "${APPNAME} ${APPVERSION}"