diff --git a/threecolor-modbus-collector/.gitmodules b/threecolor-modbus-collector/.gitmodules
new file mode 100644
index 0000000..884b806
--- /dev/null
+++ b/threecolor-modbus-collector/.gitmodules
@@ -0,0 +1,2 @@
+[submodule "threecolor-modbus-collector"]
+	branch = develo