diff --git a/README.md b/README.md
index 5fd3c9c..ab94667 100644
--- a/README.md
+++ b/README.md
@@ -130,7 +130,7 @@ We provide a simple inference script to test the model. In this script, we use G
 CUDA_VISIBLE_DEVICES=0 python demo/inference_single_image.py \
   --image_path demo/example_images/demo_helmet.png \
   --cate_name helmet \
-  --ref_exp the forth helmet from left \
+  --ref_exp "the forth helmet from left" \
   --vis_path vis/example_output.jpg 
 ```
 
@@ -264,4 +264,4 @@ Rex-Thinker is licensed under the [IDEA License 1.0](LICENSE), Copyright (c) IDE
       primaryClass={cs.CV},
       url={https://arxiv.org/abs/2506.04034}, 
 }
-```
\ No newline at end of file
+```
diff --git a/requirements.txt b/requirements.txt
index 24e9014..6049d22 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -21,4 +21,5 @@ wandb
 tensorboard
 gradio==4.44.1
 pydantic==2.10.6
-tabulate
\ No newline at end of file
+tabulate
+opencv-python==4.10.0.82