diff --git a/pyproject.toml b/pyproject.toml
index c5d9a8d..2de2e73 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -30,7 +30,7 @@ dependencies = [
 mcp  = ["mcp>=1.27.0"]
 llm  = ["openai>=1.40"]
 test = ["pytest>=9.0.3", "pytest-asyncio>=1.3.0", "httpx>=0.28.1"]
-dev  = ["recall[mcp,llm,test]", "ruff>=0.5", "mypy>=1.20.2"]
+dev  = ["recall[mcp,llm,test]", "ruff>=0.15.12", "mypy>=1.20.2"]
 
 [project.scripts]
 recall-server = "recall.app:main"