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README.md

@@ -23,7 +23,7 @@ Prebuilt dense retrieval corpus used by the OPERA inference pipeline
 (*OPERA: A Reinforcement Learning–Enhanced Orchestrated Planner-Executor
 Architecture for Reasoning-Oriented Multi-Hop Retrieval*).
 
-[![arXiv](https://img.shields.io/badge/arXiv-2508.16438-b31b1b.svg)](https://arxiv.org/abs/2508.16438)
+[![arXiv](https://img.shields.io/badge/arXiv-2508.16438-b31b1b.svg)](https://arxiv.org/pdf/2508.16438)
 [![GitHub](https://img.shields.io/badge/GitHub-OPERA-181717?logo=github)](https://github.com/Ameame1002/OPERA)
 [![AAAI 2026](https://img.shields.io/badge/AAAI-2026-1f6feb.svg)](https://doi.org/10.1609/aaai.v40i38.40499)