diff --git a/.gitmodules b/.gitmodules
index e69de29b..f53b1405 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -0,0 +1,9 @@
+[submodule "test/bats"]
+	path = test/bats
+	url = https://github.com/sstephenson/bats
+[submodule "test/test_helper/bats-assert"]
+	path = test/test_helper/bats-assert
+	url = https://github.com/ztombol/bats-assert
+[submodule "test/test_helper/bats-support"]
+	path = test/test_helper/bats-support
+	url = https://github.com/ztombol/bats-support