diff --git a/Include/patchlevel.h b/Include/patchlevel.h
index db28568..8d9cd50 100644
--- a/Include/patchlevel.h
+++ b/Include/patchlevel.h
@@ -21,12 +21,12 @@
 /* Version parsed out into numeric values */
 #define PY_MAJOR_VERSION	2
 #define PY_MINOR_VERSION	5
-#define PY_MICRO_VERSION	4
-#define PY_RELEASE_LEVEL	PY_RELEASE_LEVEL_FINAL
-#define PY_RELEASE_SERIAL	0
+#define PY_MICRO_VERSION	5
+#define PY_RELEASE_LEVEL	PY_RELEASE_LEVEL_GAMMA
+#define PY_RELEASE_SERIAL	1
 
 /* Version as a string */
-#define PY_VERSION		"2.5.4"
+#define PY_VERSION		"2.5.5c1"
 
 /* Subversion Revision number of this file (not of the repository) */
 #define PY_PATCHLEVEL_REVISION  "$Revision$"