Update README.md

README.md

@@ -151,5 +151,13 @@ All five Toto 2.0 sizes share the same training recipe; pick a size based on you
 ## 📖 Citation
 
 ```bibtex
-(citation coming soon)
+@misc{khwaja2026toto20timeseries,
+      title={Toto 2.0: Time Series Forecasting Enters the Scaling Era}, 
+      author={Emaad Khwaja and Chris Lettieri and Gerald Woo and Eden Belouadah and Marc Cenac and Guillaume Jarry and Enguerrand Paquin and Xunyi Zhao and Viktoriya Zhukov and Othmane Abou-Amal and Chenghao Liu and Ameet Talwalkar and David Asker},
+      year={2026},
+      eprint={2605.20119},
+      archivePrefix={arXiv},
+      primaryClass={cs.LG},
+      url={https://arxiv.org/abs/2605.20119}, 
+}
 ```