diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..7f778b6
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "maxima"]
+	path = maxima
+	url = https://git.code.sf.net/p/maxima/code
diff --git a/maxima b/maxima
new file mode 160000
index 0000000..3a1c2c2
--- /dev/null
+++ b/maxima
@@ -0,0 +1 @@
+Subproject commit 3a1c2c2c7363a58814f9c94f47f966d4861634b1