diff --git a/doc/source/index.rst b/doc/source/index.rst
index 8b8acde..9f477ab 100644
--- a/doc/source/index.rst
+++ b/doc/source/index.rst
@@ -40,7 +40,7 @@
 attempts to support the two latest LTS releases of Ubuntu, the
 latest/current Fedora version, CentOS/RHEL 8 and OpenSUSE.
 
-If you do not have a preference, Ubuntu 18.04 (Bionic Beaver) is the
+If you do not have a preference, Ubuntu 20.04 (Focal Fossa) is the
 most tested, and will probably go the smoothest.
 
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