diff --git a/.gitmodules b/.gitmodules
index 69e424c..db3b4ac 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -4,3 +4,6 @@
 [submodule "ext/marp-assets"]
 	path = ext/marp-assets
 	url = git@bitbucket.org:glenux/marp-assets.git
+[submodule ".makefiles"]
+	path = .makefiles
+	url = https://github.com/glenux/makefiles-forever
diff --git a/.makefiles b/.makefiles
new file mode 160000
index 0000000..d70b96a
--- /dev/null
+++ b/.makefiles
@@ -0,0 +1 @@
+Subproject commit d70b96a071a1e2bf919d57464c9e1ba1d0d8db56