diff --git a/brew/install b/brew/install
new file mode 100755
index 0000000..1140128
--- /dev/null
+++ b/brew/install
@@ -0,0 +1,4 @@
+#!/usr/bin/env bash
+
+comm -13 <(brew list) brew/formulae | xargs brew install
+comm -13 <(brew cask list) brew/casks | xargs brew cask install
diff --git a/darwin.conf.yaml b/darwin.conf.yaml
index aac70a0..7810860 100644
--- a/darwin.conf.yaml
+++ b/darwin.conf.yaml
@@ -1,6 +1,5 @@
 - shell:
-    - comm -13 <(brew list) brew/formulae | xargs brew install
-    - comm -13 <(brew cask list) brew/casks | xargs brew cask install
+    - brew/install
 
 - link:
     ~/.config/zsh/os.zshrc: zsh/darwin.zshrc