diff --git a/connector_builder_agents/pyproject.toml b/connector_builder_agents/pyproject.toml
index 36c9fd7..9172576 100644
--- a/connector_builder_agents/pyproject.toml
+++ b/connector_builder_agents/pyproject.toml
@@ -7,6 +7,7 @@ requires-python = ">=3.11"
 dependencies = [
     "python-dotenv>=1.1.1",
     "openai-agents>=0.3.3",
+    "openai>=1.50.0,<2.0", # Pin OpenAI to v1.x to avoid API compatibility issues
     "mcp-agent>=0.1.15", # Transitive dependency of openai-agents
     "pydantic>=2.11.9,<3.0",
     "pyyaml>=6.0.1",