diff --git a/requirements-testing.txt b/requirements-testing.txt
index 9bb41229..a34611a1 100644
--- a/requirements-testing.txt
+++ b/requirements-testing.txt
@@ -15,7 +15,7 @@ mypy >= 1.17, < 1.20
 types-requests ~= 2.32; python_version >= "3.10"
 types-requests ~= 2.31; python_version < "3.10"
 
-ruff ~= 0.15.6
+ruff ~= 0.15.9
 twine ~= 6.2
 types-psutil ~= 7.2
 types-PyYAML == 6.0.*