diff --git a/upstream b/upstream
index aac62a3..21645eb 160000
--- a/upstream
+++ b/upstream
@@ -1 +1 @@
-Subproject commit aac62a32d9f47d57f3aada9e8353053b7ee2bbd7
+Subproject commit 21645ebf0bf7ea5902fb3ceb7737d688847ed318