diff --git a/README.md b/README.md
index 92cb16f..823c6c2 100644
--- a/README.md
+++ b/README.md
@@ -13,11 +13,13 @@ without passing `--recursive`, you can run `git submodule update
 
 ```sh
 git clone --recursive git@git.wip.sh:<your-username>/lua-exercises.git
-# or
-git clone git@git.wip.sh:<your-username>/lua-exercises.git
-git submodule update --init
 ```
 
+Once you have a local clone of the repo, `cd` into the directory and
+run `nix develop .` to activate the development environment.  The
+first time you do this it might take a little while but it should be
+fairly fast afterwards.
+
 ## Doing the Exercises
 
 It's recommended that you roughly stick to the defined order of the