diff --git a/pyproject.toml b/pyproject.toml
index d0eac01fe0..e3a3a2efbe 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -14,6 +14,7 @@ known_first_party = "satpy"
 line_length = 120
 
 [tool.ruff]
+# See https://docs.astral.sh/ruff/rules/
 select = ["E", "W", "F", "I", "D", "S", "B", "A", "PT", "Q", "TID", "C90", "T10", "N"]
 ignore = ["B905"]  # only available from python 3.10
 line-length = 120