diff --git a/ACL_PyTorch/contrib/cv/detection/Cascade-RCNN-Resnet50-FPN/requirements.txt b/ACL_PyTorch/contrib/cv/detection/Cascade-RCNN-Resnet50-FPN/requirements.txt
index 76019f1bb452e2bf972370bd61dda379b8991a1f..24a43e682c667a1048add391e3ef525779932086 100644
--- a/ACL_PyTorch/contrib/cv/detection/Cascade-RCNN-Resnet50-FPN/requirements.txt
+++ b/ACL_PyTorch/contrib/cv/detection/Cascade-RCNN-Resnet50-FPN/requirements.txt
@@ -5,4 +5,4 @@ onnx==1.7.0
 onnxoptimizer==0.2.7
 onnxruntime==1.5.2
 opencv-python==4.4.0.46
-cpython==0.29.30
\ No newline at end of file
+cython==0.29.30
\ No newline at end of file