diff --git a/README.rst b/README.rst
index b7711d4026..193d806898 100644
--- a/README.rst
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@@ -2,6 +2,9 @@
 CTSM
 ====
 
+.. image:: https://zenodo.org/badge/DOI/10.5281/zenodo.3739617.svg
+   :target: https://doi.org/10.5281/zenodo.3739617
+
 The Community Terrestrial Systems Model.
 
 This includes the Community Land Model (CLM5.0 and CLM4.5) of the Community Earth System Model.