diff --git a/sources/lib/protocol-buffers b/sources/lib/protocol-buffers
index 2c33ffc00..6661e71b9 160000
--- a/sources/lib/protocol-buffers
+++ b/sources/lib/protocol-buffers
@@ -1 +1 @@
-Subproject commit 2c33ffc006eeee6e9cebf83e4eebaecfc5e5d2d8
+Subproject commit 6661e71b93922d210259badeb9af7c85f6f4ab1b