diff --git a/Include/patchlevel.h b/Include/patchlevel.h
index af1b3f9..b6c7acc 100644
--- a/Include/patchlevel.h
+++ b/Include/patchlevel.h
@@ -1 +1 @@
-#define PATCHLEVEL "1.5.2a2"
+#define PATCHLEVEL "1.5.2b1"