diff --git a/pyproject.toml b/pyproject.toml
index b84a52875..330b2e91f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -7,6 +7,9 @@ line_length = 100
 profile = "black"
 multi_line_output = 3
 
+[tool.ruff]
+ignore = ["E501"]
+
 # Flit configuration ([build-system] and [project]) are used when pip installing with github url.
 # See commands in README.
 [build-system]