diff --git a/references.bib b/references.bib
index 876d01b..081088c 100644
--- a/references.bib
+++ b/references.bib
@@ -116,7 +116,7 @@
 	  journal={Advances in Neural Information Processing Systems},
 	  volume={35},
 	  pages={5390--5403},
-	  year={2022}
+	  year={2022},
 	  url={https://arxiv.org/abs/2109.15048},
 }