diff --git a/README.md b/README.md
index f201832..268fa42 100644
--- a/README.md
+++ b/README.md
@@ -8,5 +8,6 @@ modify appropriately.
 1. Fork this repository.
 2. Modify the `Puppetfile` and `modules/` to your heart's content.
 3. Get a copy of your fork somewhere locally.
-4. `cd` to that dir and run `script/boxen`
-5. Rock out. :metal:
\ No newline at end of file
+4. Install the XCode Command Line Tools package. You need an Apple ID. We know. It sucks. You can thank Apple for not allowing the Command Line Tools to be redistributed publicly.
+5. `cd` to that dir and run `script/boxen`
+6. Rock out. :metal: