diff --git a/README.Rmd b/README.Rmd
index 3629204..4ca2a4c 100644
--- a/README.Rmd
+++ b/README.Rmd
@@ -18,6 +18,7 @@ knitr::opts_chunk$set(
 [![Codecov test coverage](https://codecov.io/gh/jhollist/nsink/branch/main/graph/badge.svg)](https://codecov.io/gh/jhollist/nsink?branch=main)
 [![Lifecycle: stable](https://img.shields.io/badge/lifecycle-stable-brightgreen.svg)](https://lifecycle.r-lib.org/articles/stages.html#stable)
 [![DOI](https://zenodo.org/badge/DOI/10.5281/zenodo.6341565.svg)](https://doi.org/10.5281/zenodo.6341565)
+[![DOI](https://joss.theoj.org/papers/10.21105/joss.04039/status.svg)](https://doi.org/10.21105/joss.04039)
 <!-- badges: end -->
 
 # Statement of need
diff --git a/README.md b/README.md
index df55ec5..4adb1c4 100644
--- a/README.md
+++ b/README.md
@@ -11,6 +11,7 @@ coverage](https://codecov.io/gh/jhollist/nsink/branch/main/graph/badge.svg)](htt
 [![Lifecycle:
 stable](https://img.shields.io/badge/lifecycle-stable-brightgreen.svg)](https://lifecycle.r-lib.org/articles/stages.html#stable)
 [![DOI](https://zenodo.org/badge/DOI/10.5281/zenodo.6341565.svg)](https://doi.org/10.5281/zenodo.6341565)
+[![DOI](https://joss.theoj.org/papers/10.21105/joss.04039/status.svg)](https://doi.org/10.21105/joss.04039)
 <!-- badges: end -->
 
 # Statement of need
@@ -29,7 +30,7 @@ al (2010)](https://doi.org/10.1016/j.ecoleng.2010.02.006).
 
 # `nsink` functionality
 
-As of 2022-03-09 user functions for the `nsink` package are:
+As of 2022-03-14 user functions for the `nsink` package are:
 
 -   `nsink_get_huc_id()`: A function for searching the name of a USGS
     Watershed Boundary Dataset Hydrologic Unit
diff --git a/inst/CITATION b/inst/CITATION
new file mode 100644
index 0000000..d235fe1
--- /dev/null
+++ b/inst/CITATION
@@ -0,0 +1,15 @@
+citHeader("To cite nsink in publications use:")
+
+citEntry(
+  entry    = "Article",
+  title    = "nsink: An R package for flow path nitrogen removal estimation",
+  author   = "Jeffrey W. Hollister and Dorothy Q. Kellogg and Qian Lei-Parent and Emily Wilson and Cary Chadwick and David Dickson and Arthur Gold and Chester Arnold",
+  journal  = "Journal of Open Source Software",
+  year     = 2022,
+  volume   = 7,
+  number   = 71,
+  pages    = 4039,
+  url      = "https://doi.org/10.21105/joss.04039",
+  doi      = "10.21105/joss.04039",
+  textVersion = paste("Hollister et al., (2022). nsink: An R package for flow path nitrogen removal estimation. Journal of Open Source Software, 7(71), 4039, https://doi.org/10.21105/joss.04039")
+)