diff --git a/upstream b/upstream
index 4d563c6..991c364 160000
--- a/upstream
+++ b/upstream
@@ -1 +1 @@
-Subproject commit 4d563c6dfaf854260314cb5cdc9df577ec512805
+Subproject commit 991c36453c5ebd6546f1821fd6089392599ca4bf