diff --git a/tools/build/MOAR_REVISION b/tools/build/MOAR_REVISION
index 48bd1f8f58..a1f29d24e3 100644
--- a/tools/build/MOAR_REVISION
+++ b/tools/build/MOAR_REVISION
@@ -1 +1 @@
-2017.09.1-580-g631b3bf
+2017.09.1-591-gf2deedf