diff --git a/README.md b/README.md
index 5237a85..404091b 100644
--- a/README.md
+++ b/README.md
@@ -73,6 +73,9 @@ Install in developer mode with dev dependencies:
 
 ```sh
 pip install -e .[dev]
+
+# Note: zsh and some other shells require quotes around brackets:
+pip install -e ".[dev]"
 ```
 
 Install pre-commit hook: