diff --git a/.gitmodules b/.gitmodules
index e406bcfa..22f34ffd 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,6 +1,3 @@
-[submodule "riscv-o3"]
-	path = riscv-o3
-	url = git@github.com:stineje/riscv-o3.git
 [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/
diff --git a/riscv-o3 b/riscv-o3
deleted file mode 160000
index afb27bd5..00000000
--- a/riscv-o3
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit afb27bd558a9b6fabb6b768ae81ef122b4db9eea