diff --git a/pyproject.toml b/pyproject.toml
index 4ede73679..269fa8628 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -110,3 +110,6 @@ include = [
     "neuralprophet/df_utils.py",
     "neuralprophet/hdays_utils.py",
 ]
+
+[tool.ruff]
+line-length = 120