diff --git a/backend/pyproject.toml b/backend/pyproject.toml
index e6b40a0..26cf69b 100644
--- a/backend/pyproject.toml
+++ b/backend/pyproject.toml
@@ -33,7 +33,7 @@ dev = [
     "pytest-cov>=5.0.0",
     "httpx>=0.28.0",
     "anyio[trio]>=4.0.0",
-    "ruff==0.4.8",
+    "ruff==0.15.18",
     "mypy>=1.13.0",
     "sqlalchemy[mypy]>=2.0.0",
     "types-redis",