diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..02e21f9
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "lib/Z80-CPU-for-KiCAD"]
+	path = lib/Z80-CPU-for-KiCAD
+	url = https://github.com/flypie/Z80-CPU-for-KiCAD.git