diff --git a/.gitmodules b/.gitmodules
index 32d49fb75ce329ed7584e74884da21173f3c90ea..c3c9350fbb33056e66f1d8d9a6fb443d93867556 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,3 +1,7 @@
 [submodule "libs/spdlog"]
 	path = libs/spdlog
 	url = https://github.com/gabime/spdlog
+
+[submodule "libs/freeopcua"]
+	path = libs/freeopcua
+	url = https://github.com/FreeOpcUa/freeopcua
\ No newline at end of file