diff --git a/backend/app/main.py b/backend/app/main.py
index 06615ff..42ee6a1 100644
--- a/backend/app/main.py
+++ b/backend/app/main.py
@@ -276,7 +276,7 @@ def extract_pdf_text_smart(pdf_content: bytes, max_chars: int = None) -> dict:
         }
 
 
-BACKEND_VERSION = "1.1.0"
+BACKEND_VERSION = "1.1.1"
 app = FastAPI(title="Checklist Inteligente API", version=BACKEND_VERSION)
 
 # S3/MinIO configuration
@@ -3493,8 +3493,12 @@ Longitud: {response_length}
         
         # Llamar a la IA según el proveedor
         if ai_config.provider == 'openai':
-            from openai import OpenAI
-            client = OpenAI(api_key=ai_config.api_key)
+            import openai
+            
+            # Crear cliente sin argumentos adicionales que puedan causar conflicto
+            client = openai.OpenAI(
+                api_key=ai_config.api_key
+            )
             
             response = client.chat.completions.create(
                 model=ai_config.model_name or "gpt-4",