diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 000000000..b90536a06
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,7 @@
+[submodule "src/thirdparty/SOIL2"]
+	path = src/thirdparty/SOIL2
+	url = https://github.com/SpartanJ/SOIL2.git
+
+[submodule "src/thirdparty/efsw"]
+	path = src/thirdparty/efsw
+	url = https://github.com/SpartanJ/efsw.git