diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..7692a74
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "ESP32Firewall/components/arduino"]
+	path = ESP32Firewall/components/arduino
+	url = https://github.com/espressif/arduino-esp32.git