diff --git a/requirements-tests.txt b/requirements-tests.txt
index a69a64e..2716376 100644
--- a/requirements-tests.txt
+++ b/requirements-tests.txt
@@ -1,6 +1,6 @@
 -r requirements.txt
 mypy==1.14.1
 pymarkdownlnt==0.9.26
-ruff==0.9.0
+ruff==0.9.1
 sphinx-autobuild==2024.10.3
 yamllint==1.35.1