diff --git a/pyproject.toml b/pyproject.toml
index a6731fa..c1377cb 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -18,7 +18,7 @@ apis-acdhch-django-auditlog = "^0.2.0"
 django-json-editor-field = "^0.4.0"
 
 [tool.poetry.group.dev.dependencies]
-ruff = "^0.8.0"
+ruff = "^0.9.1"
 
 [build-system]
 requires = ["poetry-core>=1.0.0"]