diff --git a/upstream b/upstream
index d7ce12a..6ca21e7 160000
--- a/upstream
+++ b/upstream
@@ -1 +1 @@
-Subproject commit d7ce12a5409a53247356f831fb4b4a39f625ad49
+Subproject commit 6ca21e7bfdd559263dbb54fb2bef51c97ba791fc