diff --git a/upstream b/upstream
index d909de2..520568f 160000
--- a/upstream
+++ b/upstream
@@ -1 +1 @@
-Subproject commit d909de2dc271ade91892e2ba0b9a5feef87beaa8
+Subproject commit 520568f40f22d77e623ddda77cf751031774384b