diff --git a/src/protobuf b/src/protobuf
index 0c5ed87..51dfbf0 160000
--- a/src/protobuf
+++ b/src/protobuf
@@ -1 +1 @@
-Subproject commit 0c5ed870781d95bf3bd91f93515b655b65957641
+Subproject commit 51dfbf0577585952f5c06b0b3b3581b606176e8a