diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..09ed00d
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "circle-stdlib"]
+	path = circle-stdlib
+	url = https://github.com/smuehlst/circle-stdlib
diff --git a/circle-stdlib b/circle-stdlib
new file mode 160000
index 0000000..47d9deb
--- /dev/null
+++ b/circle-stdlib
@@ -0,0 +1 @@
+Subproject commit 47d9deb580f3d91201c2e275d3412abfbafdf156