Update README.md

README.md

@@ -16,5 +16,13 @@ Check out our [paper](wip) for more details.
 ## Citation
 
 ```bibtex
-wip
+@misc{pombal2025mprometheussuiteopenmultilingual,
+      title={M-Prometheus: A Suite of Open Multilingual LLM Judges}, 
+      author={José Pombal and Dongkeun Yoon and Patrick Fernandes and Ian Wu and Seungone Kim and Ricardo Rei and Graham Neubig and André F. T. Martins},
+      year={2025},
+      eprint={2504.04953},
+      archivePrefix={arXiv},
+      primaryClass={cs.CL},
+      url={https://arxiv.org/abs/2504.04953}, 
+}
 ```