diff --git a/rescript/citations.bib b/rescript/citations.bib
index 442c8c5..bc4b4fa 100644
--- a/rescript/citations.bib
+++ b/rescript/citations.bib
@@ -73,9 +73,9 @@ @article{ncbi2018database
   number={D1},
   pages={D8--D13},
   year={2018},
-  publisher={Oxford University Press}
+  publisher={Oxford University Press},
   doi = {10.1093/nar/gkx1095},
-  url = {https://doi.org/10.1093/nar/gkx1095},
+  url = {https://doi.org/10.1093/nar/gkx1095}
 }
 
 @article{benson2012genbank,