diff --git a/.gitmodules b/.gitmodules
index ed8cb301..bedce35c 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -53,4 +53,4 @@
 	path = deps/protobuf
 	url = https://github.com/google/protobuf.git
 	shallow = true
-	branch = 3.1.x
+	branch = tags/v3.1.0
diff --git a/deps/protobuf b/deps/protobuf
index 7a4906fa..a428e420 160000
--- a/deps/protobuf
+++ b/deps/protobuf
@@ -1 +1 @@
-Subproject commit 7a4906faf29293013828f1d4d9414ffeaa1ab7a7
+Subproject commit a428e42072765993ff674fda72863c9f1aa2d268