diff --git a/README.md b/README.md
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+++ b/README.md
@@ -9,7 +9,7 @@ X2Paddle在多个主流的CV模型上，测试过TensorFlow/Caffe/ONNX模型的
 
 ## 环境依赖
 
-python >= 3.5  
+python == 2.7 | python >= 3.5  
 paddlepaddle >= 1.5.0  
 
 **按需安装以下依赖**