diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 00000000..00dc73a5
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,7 @@
+[submodule "tools/asm-differ"]
+	path = tools/asm-differ
+	url = https://github.com/simonlindholm/asm-differ
+[submodule "tools/Torch"]
+	path = tools/Torch
+	url = https://github.com/HarbourMasters/Torch
+