diff --git a/.gitmodules b/.gitmodules
index 70fda6a17..22790ccc7 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -31,3 +31,6 @@
 [submodule "login_server/src/proto"]
         path = login_server/src/proto
         url =  https://github.com/gradido/gradido_protocol.git
+[submodule "login_server/dependencies/protobuf"]
+	path = login_server/dependencies/protobuf
+	url = https://github.com/protocolbuffers/protobuf.git
diff --git a/login_server/dependencies/protobuf b/login_server/dependencies/protobuf
new file mode 160000
index 000000000..0b8d13a1d
--- /dev/null
+++ b/login_server/dependencies/protobuf
@@ -0,0 +1 @@
+Subproject commit 0b8d13a1d4cd9be16ed8a2230577aa9c296aa1ca