diff --git a/docs/source/references.bib b/docs/source/references.bib
index 198f13d..0f41b86 100644
--- a/docs/source/references.bib
+++ b/docs/source/references.bib
@@ -2,6 +2,7 @@ @article{StockEtAl2019
  author = {Stock, Charles A. and Dunne, John P. and Fan, Songmiao and Ginoux, Paul and John, Jasmin and Krasting, John P. and Laufkötter, Charlotte and Paulot, Fabien and Zadeh, Niki},
  title = {Ocean Biogeochemistry in GFDL's Earth System Model 4.1 and Its Response to Increasing Atmospheric CO2},
  journal = {Journal of Advances in Modeling Earth Systems},
+ year={2019},
  volume = {12},
  number = {10},
  pages = {e2019MS002043},