diff --git a/Include/patchlevel.h b/Include/patchlevel.h
index 311fd88d1b7..97b767a7fd8 100644
--- a/Include/patchlevel.h
+++ b/Include/patchlevel.h
@@ -1 +1 @@
-#define PATCHLEVEL "1.5a3"
+#define PATCHLEVEL "1.5a4"