diff --git a/UPSTREAM_REF b/UPSTREAM_REF
index 3634b00..5c55375 100644
--- a/UPSTREAM_REF
+++ b/UPSTREAM_REF
@@ -1 +1 @@
-ec581b5e5f156edb862d01f4bd07d9ba51903ed6
+6691b785c30715ec4561b00b7bd0fd112478d3e3