diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..1befb2c
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "src/bcl"]
+	path = src/bcl
+	url = https://github.com/berkeley-container-library/bcl