diff --git a/upstream b/upstream
index 9b11e39..978c4e6 160000
--- a/upstream
+++ b/upstream
@@ -1 +1 @@
-Subproject commit 9b11e39890867976e4b26590cf5de085163e3ff6
+Subproject commit 978c4e6c8afc0199e2cbd9037bdc7c41fbbab2a3