diff --git a/setup.py b/setup.py
index 1b347f6..6f41873 100644
--- a/setup.py
+++ b/setup.py
@@ -50,7 +50,7 @@ if __name__ == '__main__':
                 'scikit-optimize',
             ],
             'dev': [
-                'ruff',
+                'ruff==0.0.160',
                 'coverage',
                 'mypy',
             ],