diff --git a/.gitmodules b/.gitmodules
index d006fc41..095a6a5e 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,3 +1,12 @@
 [submodule "test_lib/bats-core"]
 	path = test_lib/bats-core
 	url = https://github.com/bats-core/bats-core
+[submodule "test_lib/bats-support"]
+	path = test_lib/bats-support
+	url = https://github.com/ztombol/bats-support
+[submodule "test_lib/bats-assert"]
+	path = test_lib/bats-assert
+	url = https://github.com/ztombol/bats-assert
+[submodule "test_lib/bats-file"]
+	path = test_lib/bats-file
+	url = https://github.com/ztombol/bats-file
diff --git a/test_lib/bats-assert b/test_lib/bats-assert
new file mode 160000
index 00000000..9f88b420
--- /dev/null
+++ b/test_lib/bats-assert
@@ -0,0 +1 @@
+Subproject commit 9f88b4207da750093baabc4e3f41bf68f0dd3630
diff --git a/test_lib/bats-file b/test_lib/bats-file
new file mode 160000
index 00000000..2fddb2b8
--- /dev/null
+++ b/test_lib/bats-file
@@ -0,0 +1 @@
+Subproject commit 2fddb2b831d65cdf2e411f3b47f4677fbb15729c
diff --git a/test_lib/bats-support b/test_lib/bats-support
new file mode 160000
index 00000000..004e7076
--- /dev/null
+++ b/test_lib/bats-support
@@ -0,0 +1 @@
+Subproject commit 004e707638eedd62e0481e8cdc9223ad471f12ee