diff --git a/agentverse/llms/openai.py b/agentverse/llms/openai.py
index 11b17f02..3c9e874e 100644
--- a/agentverse/llms/openai.py
+++ b/agentverse/llms/openai.py
@@ -252,7 +252,7 @@ def generate_response(
                     self.collect_metrics(response)
 
                     return LLMResult(
-                        content=response.choices[0].message.get("content", ""),
+                        content=response.choices[0].message.content or "",
                         function_name=response.choices[0].message.function_call.name,
                         function_arguments=ast.literal_eval(
                             response.choices[0].message.function_call.arguments
diff --git a/requirements.txt b/requirements.txt
index be80b602..4de663da 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,7 +3,7 @@ fastapi==0.95.1
 uvicorn
 py3langid
 setuptools-scm
-openai==1.1.0
+openai>=1,<2
 opencv-python==4.8.0.76
 gradio
 httpx[socks]==0.25.0