diff --git a/VERSION b/VERSION
index bc80560fad66ca670bdfbd1e5c973a024d4d0325..c7661a0092f7aa35a05593f3f9f81d73a7767d42 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-1.5.0
+1.5.1-beta1