diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..32a2fa9
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule ".zsh/pure"]
+	path = .zsh/pure
+	url = https://github.com/sindresorhus/pure
diff --git a/.zsh/pure b/.zsh/pure
new file mode 160000
index 0000000..da1a722
--- /dev/null
+++ b/.zsh/pure
@@ -0,0 +1 @@
+Subproject commit da1a722238febb9a4b97c77628fae753d1817490