diff --git a/README.md b/README.md
index 9800708..0cb0ba9 100644
--- a/README.md
+++ b/README.md
@@ -31,4 +31,6 @@ In a project that needs a toolchain, add `flake.nix`
       redis.enable = true;
     };
 }
-```
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+```
+
+Then to get a shell run `nix develop`. By default, Nix shells use `bash`. If you want `zsh`, you can run `nix develop -c zsh`.
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