diff --git a/.github/workflows/gen_whl_to_pypi_rapidocr_api.yml b/.github/workflows/gen_whl_to_pypi_rapidocr_api.yml
index 5c742f837..e02554df4 100644
--- a/.github/workflows/gen_whl_to_pypi_rapidocr_api.yml
+++ b/.github/workflows/gen_whl_to_pypi_rapidocr_api.yml
@@ -35,6 +35,7 @@ jobs:
         run: |
           cd api
           pip install -r requirements.txt
+          pip install get_pypi_latest_version wheel
 
           python -m pip install --upgrade pip
           python setup.py bdist_wheel ${{ github.event.head_commit.message }}
diff --git a/api/rapidocr_api/api.py b/api/rapidocr_api/api.py
index d00b407cb..234116e5f 100644
--- a/api/rapidocr_api/api.py
+++ b/api/rapidocr_api/api.py
@@ -4,18 +4,16 @@
 import argparse
 import base64
 import io
-import json
-from pathlib import Path
 import sys
+from pathlib import Path
+from typing import Dict
 
-import cv2
 import numpy as np
 import uvicorn
 from fastapi import FastAPI, Form, UploadFile
 from PIL import Image
 from rapidocr_onnxruntime import RapidOCR
 
-
 sys.path.append(str(Path(__file__).resolve().parent.parent))
 
 
@@ -23,13 +21,12 @@ class OCRAPIUtils:
     def __init__(self) -> None:
         self.ocr = RapidOCR()
 
-    def __call__(self, img):
+    def __call__(self, img: Image.Image) -> Dict:
         img = np.array(img)
-        img = cv2.cvtColor(img, cv2.COLOR_RGB2BGR)
 
         ocr_res, _ = self.ocr(img)
         if not ocr_res:
-            return json.dumps({})
+            return {}
 
         out_dict = {
             str(i): {"rec_txt": rec, "dt_boxes": dt_box, "score": score}
diff --git a/api/requirements.txt b/api/requirements.txt
index a1867f47a..5892806bd 100644
--- a/api/requirements.txt
+++ b/api/requirements.txt
@@ -1,6 +1,5 @@
 requests
 rapidocr_onnxruntime
-get_pypi_latest_version
-wheel
 fastapi
 uvicorn[standard]
+python-multipart
\ No newline at end of file