diff --git a/addon/skyfield/requirements-dev.txt b/addon/skyfield/requirements-dev.txt
index b690d7d..18115b2 100644
--- a/addon/skyfield/requirements-dev.txt
+++ b/addon/skyfield/requirements-dev.txt
@@ -1,2 +1,2 @@
 -r requirements.txt
-ruff>=0.7
+ruff>=0.15.13