diff --git a/pyproject.toml b/pyproject.toml
index e157e6d..7165170 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -5,7 +5,7 @@ target-version = "py39"
 
 [tool.ruff.lint]
 select = ["E", "F", "B", "I", "SIM", "UP", "C4"]
-ignore = ["SIM108", "SIM110"]
+ignore = ["SIM108", "SIM110", "B039"]
 
 [tool.ruff.lint.per-file-ignores]
 "tests/**/*.py" = [