diff --git a/upstream b/upstream
index b6b8082..81d9c29 160000
--- a/upstream
+++ b/upstream
@@ -1 +1 @@
-Subproject commit b6b80824cc71fb9f32ddf2e9a96205633342827e
+Subproject commit 81d9c29d694b88d20533adaf1c3b1721386652aa