diff --git a/pyproject.toml b/pyproject.toml
index ced1df9..b31350c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -9,7 +9,7 @@ dependencies = [
 ]
 
 [project.optional-dependencies]
-dev = ["pytest>=8.0"]
+dev = ["pytest>=9.1.0"]
 
 [project.scripts]
 mcp-router = "src.server:mcp.run"