diff --git a/.gitmodules b/.gitmodules
index b9e288dfe6..fc800befed 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -259,3 +259,9 @@
 [submodule "_vendor/github.com/pelletier/go-buffruneio"]
 	path = _vendor/github.com/pelletier/go-buffruneio
 	url = https://github.com/pelletier/go-buffruneio
+[submodule "_vendor/github.com/coreos/etcd"]
+	path = _vendor/github.com/coreos/etcd
+	url = https://github.com/coreos/etcd
+[submodule "_vendor/google.golang.org/grpc"]
+	path = _vendor/google.golang.org/grpc
+	url = https://github.com/grpc/grpc-go.git
diff --git a/_vendor/github.com/coreos/etcd b/_vendor/github.com/coreos/etcd
new file mode 160000
index 0000000000..cc198e22d3
--- /dev/null
+++ b/_vendor/github.com/coreos/etcd
@@ -0,0 +1 @@
+Subproject commit cc198e22d3b8fd7ec98304c95e68ee375be54589
diff --git a/_vendor/google.golang.org/grpc b/_vendor/google.golang.org/grpc
new file mode 160000
index 0000000000..231b4cfea0
--- /dev/null
+++ b/_vendor/google.golang.org/grpc
@@ -0,0 +1 @@
+Subproject commit 231b4cfea0e79843053a33f5fe90bd4d84b23cd3