diff --git a/app/invoice_fetcher.py b/app/invoice_fetcher.py
index 998adb4..93bccc4 100755
--- a/app/invoice_fetcher.py
+++ b/app/invoice_fetcher.py
@@ -52,7 +52,7 @@ Base = declarative_base()
 #     note = Column(String, nullable=True)
 #     created_at = Column(DateTime, default=datetime.now)
 
-def solve_captcha(img_b64: str) -> str:
+async def solve_captcha(img_b64: str) -> str:
 
     # client = anthropic.Anthropic(api_key=ANTHROPIC_API_KEY)
     # 改用groq