diff --git a/vendor/google.golang.org/grpc/Makefile b/vendor/google.golang.org/grpc/Makefile
new file mode 100644
index 0000000..1f89609
--- /dev/null
+++ b/vendor/google.golang.org/grpc/Makefile
@@ -0,0 +1,46 @@
+all: vet test testrace
+
+build:
+	go build google.golang.org/grpc/...
+
+clean:
+	go clean -i google.golang.org/grpc/...
+
+deps:
+	GO111MODULE=on go get -d -v google.golang.org/grpc/...
+
+proto:
+	@ if ! which protoc > /dev/null; then \
+		echo "error: protoc not installed" >&2; \
+		exit 1; \
+	fi
+	go generate google.golang.org/grpc/...
+
+test:
+	go test -cpu 1,4 -timeout 7m google.golang.org/grpc/...
+
+testsubmodule:
+	cd security/advancedtls && go test -cpu 1,4 -timeout 7m google.golang.org/grpc/security/advancedtls/...
+	cd security/authorization && go test -cpu 1,4 -timeout 7m google.golang.org/grpc/security/authorization/...
+
+testrace:
+	go test -race -cpu 1,4 -timeout 7m google.golang.org/grpc/...
+
+testdeps:
+	GO111MODULE=on go get -d -v -t google.golang.org/grpc/...
+
+vet: vetdeps
+	./vet.sh
+
+vetdeps:
+	./vet.sh -install
+
+.PHONY: \
+	all \
+	build \
+	clean \
+	proto \
+	test \
+	testrace \
+	vet \
+	vetdeps