diff --git a/pyproject.toml b/pyproject.toml
index b03b94c..5d86538 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -40,7 +40,7 @@ dependencies = [
 
 [project.optional-dependencies]
 dev = [
-    "ruff==0.9.6",
+    "ruff==0.15.20",
     "pytest>=8.3",
     "pytest-asyncio>=0.25",
     "pytest-cov>=6.0",