diff --git a/.gitmodules b/.gitmodules
index e69de29bb..65e1e71c9 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "sky130/sky130_osu_sc_t12"]
+	path = sky130/sky130_osu_sc_t12
+	url = https://foss-eda-tools.googlesource.com/skywater-pdk/libs/sky130_osu_sc_t12/