diff --git a/pyproject.toml b/pyproject.toml
index 5755b4c4..793b520a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -39,7 +39,7 @@ dependencies = [
   "mcp>=1.0.0,<2.0.0",
   "prometheus-client>=0.21.0,<1.0.0",
   "litellm>=1.0.0,<2.0.0",
-  "tenacity>=8.0.0,<9.0.0",
+  "tenacity>=8.0.0,<10.0.0",
   "PyYAML>=6.0,<7.0",
 ]