diff --git a/.gitmodules b/.gitmodules
index e3bb671..37fb006 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -39,6 +39,9 @@
 [submodule "hl-todo"]
 	path = lib/hl-todo
 	url = git@github.com:tarsius/hl-todo.git
+[submodule "macrostep"]
+	path = lib/macrostep
+	url = git@github.com:joddie/macrostep.git
 [submodule "magit"]
 	path = lib/magit
 	url = git@github.com:magit/magit.git
diff --git a/lib/macrostep b/lib/macrostep
new file mode 160000
index 0000000..424e373
--- /dev/null
+++ b/lib/macrostep
@@ -0,0 +1 @@
+Subproject commit 424e3734a1ee526a1bd7b5c3cd1d3ef19d184267