diff --git a/.gitmodules b/.gitmodules
index 1e1876b724e..9534e2d016d 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -4,7 +4,7 @@
 [submodule "third_party/protobuf"]
 	path = third_party/protobuf
 	url = https://github.com/google/protobuf.git
-	branch = v3.0.0-beta-3.1
+	branch = v3.0.0-beta-3.3
 [submodule "third_party/gflags"]
 	path = third_party/gflags
 	url = https://github.com/gflags/gflags.git
diff --git a/third_party/protobuf b/third_party/protobuf
index d4d13a4349e..bdeb215cab2 160000
--- a/third_party/protobuf
+++ b/third_party/protobuf
@@ -1 +1 @@
-Subproject commit d4d13a4349e4e59d67f311185ddcc1890d956d7a
+Subproject commit bdeb215cab2985195325fcd5e70c3fa751f46e0f
diff --git a/tools/run_tests/sanity/check_submodules.sh b/tools/run_tests/sanity/check_submodules.sh
index f2d7a1429ea..b602d695649 100755
--- a/tools/run_tests/sanity/check_submodules.sh
+++ b/tools/run_tests/sanity/check_submodules.sh
@@ -45,7 +45,7 @@ cat << EOF | awk '{ print $1 }' | sort > $want_submodules
  05b155ff59114735ec8cd089f669c4c3d8f59029 third_party/gflags (v2.1.0-45-g05b155f)
  c99458533a9b4c743ed51537e25989ea55944908 third_party/googletest (release-1.7.0)
  f8ac463766281625ad710900479130c7fcb4d63b third_party/nanopb (nanopb-0.3.4-29-gf8ac463)
- d4d13a4349e4e59d67f311185ddcc1890d956d7a third_party/protobuf (v3.0.0-beta-3.2)
+ bdeb215cab2985195325fcd5e70c3fa751f46e0f third_party/protobuf (v3.0.0-beta-3.3)
  50893291621658f355bc5b4d450a8d06a563053d third_party/zlib (v1.2.8)
 EOF