diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..dafb8b6
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "external/openssl"]
+	path = external/openssl
+	url = https://github.com/openssl/openssl
\ No newline at end of file