diff --git a/Include/patchlevel.h b/Include/patchlevel.h
index 6e42220..cb00bd8 100644
--- a/Include/patchlevel.h
+++ b/Include/patchlevel.h
@@ -23,7 +23,7 @@
 #define PY_RELEASE_SERIAL	1
 
 /* Version as a string */
-#define PY_VERSION      	"3.1a1"
+#define PY_VERSION      	"3.1a1+"
 /*--end constants--*/
 
 /* Subversion Revision number of this file (not of the repository) */