diff --git a/requirements-dev.txt b/requirements-dev.txt
index d626d57..252b2e5 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -1,4 +1,4 @@
 # Pinned developer and release tooling. Runtime code remains dependency-free.
 coverage==7.16.1
 cryptography==50.0.1
-ruff==0.16.8
+ruff==0.16.9