diff --git a/pyproject.toml b/pyproject.toml
index 003503889..a681290f8 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -186,6 +186,7 @@ line-ending = "lf"
 # https://docs.astral.sh/ruff/rules/
 select = [ "E4", "E7", "E9", "F" ]
 extend-select = [
+  "ASYNC",   # https://docs.astral.sh/ruff/rules/#flake8-async-async
   "C4",      # https://docs.astral.sh/ruff/rules/#flake8-comprehensions-c4
   "COM",     # https://docs.astral.sh/ruff/rules/#flake8-commas-com
   "DJ",      # https://docs.astral.sh/ruff/rules/#flake8-django-dj