diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 00000000..d006fc41
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "test_lib/bats-core"]
+	path = test_lib/bats-core
+	url = https://github.com/bats-core/bats-core
diff --git a/test_lib/bats-core b/test_lib/bats-core
new file mode 160000
index 00000000..7b032e4b
--- /dev/null
+++ b/test_lib/bats-core
@@ -0,0 +1 @@
+Subproject commit 7b032e4b232666ee24f150338bad73de65c7b99d