Update README.md

README.md

@@ -14,7 +14,7 @@ pipeline_tag: visual-question-answering
 
 It is trained using the **GRPO-SSR** techniques, serving as the foundation for [**VL-Rethinker**](https://huggingface.co/TIGER-Lab/VL-Rethinker-72B/).
 
-For details of our approach and performance comparison, please see our [paper](https://github.com/TIGER-AI-Lab/VL-Rethinker/blob/main/paper.pdf).
+For details of our approach and performance comparison, please see our [paper](https://arxiv.org/abs/2504.08837).
 
 For details of training and evaluation, please see our [code repo](https://github.com/TIGER-AI-Lab/VL-Rethinker/).