diff --git a/benchmark/run.py b/benchmark/run.py
index 6672eee..2c2d5a3 100644
--- a/benchmark/run.py
+++ b/benchmark/run.py
@@ -119,6 +119,10 @@ elif args.format == 'onnx':
     if not os.path.exists(onnx_path):
         onnx_path = op.save_model(format='onnx')
 
+    sess = onnxruntime.InferenceSession(onnx_path,
+                                        providers=onnxruntime.get_available_providers())
+
+
     @towhee.register
     def run_onnx(img):
         img = img.convert('RGB')