diff --git a/engine/pyproject.toml b/engine/pyproject.toml
index 2c564776..ebdb05e5 100644
--- a/engine/pyproject.toml
+++ b/engine/pyproject.toml
@@ -9,7 +9,7 @@ dependencies = [
     "python-dotenv>=1.0,<2",
     "requests>=2.33.0,<3",
     "mcp[cli]>=1.0.0,<2",
-    "openai-agents[litellm]>=0.12,<0.18",
+    "openai-agents[litellm]>=0.12,<0.19",
     "tomli>=2.0,<3; python_version < \"3.11\"",
 ]