diff --git a/data/appdata/org.gnome.Calendar.appdata.xml.in.in b/data/appdata/org.gnome.Calendar.appdata.xml.in.in
index 93bf257d..f51d1c54 100644
--- a/data/appdata/org.gnome.Calendar.appdata.xml.in.in
+++ b/data/appdata/org.gnome.Calendar.appdata.xml.in.in
@@ -45,6 +45,7 @@
   <url type="bugtracker">https://gitlab.gnome.org/GNOME/gnome-calendar/issues</url>
   <url type="donation">https://www.gnome.org/donate/</url>
   <url type="vcs-browser">https://gitlab.gnome.org/GNOME/gnome-calendar</url>
+  <url type="contribute">https://wiki.gnome.org/Contribute</url>
   <project_group>GNOME</project_group>
 
   <releases>