diff --git a/.gitmodules b/.gitmodules
index 88a463730..54e471399 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,3 +1,6 @@
 [submodule "mithril_client"]
 	path = mithril_client
 	url = ssh://git@***REMOVED***/~/_mithril/gradido_mithrilJS_client
+[submodule "src/protobuf"]
+	path = src/protobuf
+	url = git@***REMOVED***:~/_protobuf/gradido_protobuf
diff --git a/src/protobuf b/src/protobuf
new file mode 160000
index 000000000..77e878253
--- /dev/null
+++ b/src/protobuf
@@ -0,0 +1 @@
+Subproject commit 77e878253ac2a044eb59700386c961c812667eae