diff --git a/src/google.golang.org/grpc b/src/google.golang.org/grpc
index 61f0b5f..f6bb397 160000
--- a/src/google.golang.org/grpc
+++ b/src/google.golang.org/grpc
@@ -1 +1 @@
-Subproject commit 61f0b5fa7c1c375e2bbf29f2f5f8610d2b5ba956
+Subproject commit f6bb3972ed15a0aaf47730344c47e9840bb5dbba