diff --git a/requirements-dev.txt b/requirements-dev.txt
index ba124ff..c003213 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -95,7 +95,7 @@ requests==2.32.5
     #   pyUSPTO (pyproject.toml)
     #   sphinx
     #   sphinx-immaterial
-ruff==0.15.2
+ruff==0.15.4
     # via pyUSPTO (pyproject.toml)
 snowballstemmer==3.0.1
     # via sphinx