diff --git a/.ruff.toml b/.ruff.toml
index 56ad888d4..d20ce533f 100644
--- a/.ruff.toml
+++ b/.ruff.toml
@@ -134,6 +134,8 @@ select = [
     "F",
     # flake8-future-annotations ('FA')
     "FA",
+    # flake8-fastapi ('FAST')
+      # FastAPI is not used in Sphinx
     # flake8-boolean-trap ('FBT')
       # NOT YET USED
     # flake8-fixme ('FIX')