diff --git a/setup.py b/setup.py
index 5851f7e..de0386a 100644
--- a/setup.py
+++ b/setup.py
@@ -37,7 +37,7 @@
     extras_require={
         "develop": [
             "black<25",
-            "ruff<0.7; python_version >= '3.7'",
+            "ruff<0.9; python_version >= '3.7'",
             "twine<6",
             "wheel<1",
         ],