diff --git a/pyproject.toml b/pyproject.toml
index 856c84c..50c9748 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -60,7 +60,7 @@ installer = "uv"
 features = [ "dev" ]
 
 [tool.hatch.envs.docs]
-extra-features = [ "doc" ]
+features = [ "doc" ]
 scripts.build = "sphinx-build -M html docs docs/_build {args}"
 scripts.open = "python -m webbrowser -t docs/_build/html/index.html"
 scripts.clean = "git clean -fdX -- {args:docs}"