diff --git a/Include/patchlevel.h b/Include/patchlevel.h
index 2d0fb111bf6..a7fa73a5910 100644
--- a/Include/patchlevel.h
+++ b/Include/patchlevel.h
@@ -20,16 +20,16 @@
 
 /* Version parsed out into numeric values */
 #define PY_MAJOR_VERSION	2
-#define PY_MINOR_VERSION	0
+#define PY_MINOR_VERSION	1
 #define PY_MICRO_VERSION	0
-#define PY_RELEASE_LEVEL	PY_RELEASE_LEVEL_FINAL
+#define PY_RELEASE_LEVEL	PY_RELEASE_LEVEL_ALPHA
 #define PY_RELEASE_SERIAL	1
 
 /* Version as a string */
-#define PY_VERSION		"2.0"
+#define PY_VERSION		"2.1a1"
 
 /* Historic */
-#define PATCHLEVEL		"2.0"
+#define PATCHLEVEL		"2.1a1"
 
 /* Version as a single 4-byte hex number, e.g. 0x010502B2 == 1.5.2b2.
    Use this for numeric comparisons, e.g. #if PY_VERSION_HEX >= ... */