diff --git a/scripts/requirements-dev.txt b/scripts/requirements-dev.txt
index 8a785ccb..18449939 100644
--- a/scripts/requirements-dev.txt
+++ b/scripts/requirements-dev.txt
@@ -1,5 +1,5 @@
 # CI pipeline (mirrors .github/workflows/dev-ci.yml)
-ruff
+ruff==0.15.7
 pylint
 pytest
 pytest-cov