diff --git a/metagpt/roles/invoice_ocr_assistant.py b/metagpt/roles/invoice_ocr_assistant.py
index 56d729fa9..bd60c43c8 100644
--- a/metagpt/roles/invoice_ocr_assistant.py
+++ b/metagpt/roles/invoice_ocr_assistant.py
@@ -24,7 +24,7 @@ class InvoicePath(BaseModel):
 
 
 class OCRResults(BaseModel):
-    ocr_results: list[dict] = []
+    ocr_results: list = []
 
 
 class InvoiceData(BaseModel):