diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..a4247e2
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,4 @@
+[submodule "ogbench"]
+	path = ogbench
+	url = https://github.com/ManifoldRG/ogbench.git
+	branch = master
diff --git a/ogbench b/ogbench
new file mode 160000
index 0000000..1d41409
--- /dev/null
+++ b/ogbench
@@ -0,0 +1 @@
+Subproject commit 1d4140997f60c52c6fb0702ec100dc988b18c548