diff --git a/_sections/30-projects.md b/_sections/30-projects.md
index f534f96..abfea0f 100644
--- a/_sections/30-projects.md
+++ b/_sections/30-projects.md
@@ -78,6 +78,7 @@ These projects pledge to drop Python 2 support in or before 2020.
 - [![](assets/psi4square.png)Psi4](http://psicode.org/) <!-- url:https://github.com/psi4/psi4 sg:340 -->
 - [![](assets/pylast.png)pyLast](https://github.com/pylast/pylast) <!-- url:https://github.com/pylast/pylast sg:319 -->
 - [![](assets/iris.png)iris](https://scitools.org.uk/iris/docs/latest/) <!-- url:https://github.com/SciTools/iris sg:290 -->
+- [![](assets/esmvaltool.png)ESMValTool](https://esmvaltool.readthedocs.io/en/latest/) <!-- url:https://github.com/ESMValGroup sg:58 -->
 - [![](assets/meshio.png)meshio](https://github.com/nschloe/meshio/) <!-- url:https://github.com/nschloe/meshio sg:271 -->
 - [![](assets/perfplot.png)perfplot](https://github.com/nschloe/perfplot/)
 - [![](assets/cmd2.png)cmd2](https://github.com/python-cmd2/cmd2) <!-- url:https://github.com/python-cmd2/cmd2 sg:205 -->
diff --git a/assets/esmvaltool.png b/assets/esmvaltool.png
new file mode 100644
index 0000000..bd1f3ee
Binary files /dev/null and b/assets/esmvaltool.png differ
diff --git a/site.js b/site.js
index 03b0d59..2fd3e7f 100644
--- a/site.js
+++ b/site.js
@@ -319,6 +319,10 @@ $(document).ready(function (){
       {content: '2.x', start: '2018-02-14', end: '2019-12-31', py2:true},
       {content: '3.x', start: '2019-11-05', end: '2023-12-31', py2:false},
     ],
+    'ESMValTool': [
+      {content: '2.x', start: '2017-09-14', end: '2019-03-07', py2:true},
+      {content: '2.x', start: '2019-03-07', end: '2023-12-31', py2:false},
+    ],
     'Dask': [
       {content: '1', start: '2014-12-21', end: '2019-07-01', py2:true},
       {content: '2', start: '2019-11-30', end: '2024-11-30', py2:false},