diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..42dd527
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "test/googletest"]
+	path = test/googletest
+	url = https://github.com/google/googletest.git
\ No newline at end of file