diff --git a/dev_requirements.txt b/dev_requirements.txt
index 7f45303..6fba101 100644
--- a/dev_requirements.txt
+++ b/dev_requirements.txt
@@ -10,7 +10,7 @@ mss==10.2.0
 defusedxml==0.7.1
 
 # Quality tooling — used by .github/workflows/quality.yml and locally.
-ruff==0.15.9
+ruff==0.15.12
 bandit==1.9.4
 pytest==9.0.2
 pytest-timeout==2.4.0