diff --git a/README.md b/README.md
index 0efa9f4..c454bf2 100644
--- a/README.md
+++ b/README.md
@@ -49,3 +49,16 @@ GTK_THEME="Adwaita:dark" exec cage -s -- \
 This only requires installing greetd, gtkgreet, cage and the archlinux
 backgrounds packages.  Unlike the setup with sway, this doesn't require
 a loose formation of configuration files.
+
+## Firefox
+
+Firefox is not reasonably managed by chezmoi.  However the setup I use is 
+reasonably easy to replicate.
+
+Install the themes:
+
+* [Kanagawa Wave](https://addons.mozilla.org/en-GB/firefox/addon/kanagawa-wave-dark-theme/)
+* [Kanagawa Lotus](https://addons.mozilla.org/en-US/firefox/addon/kanagawa-lotus-light-theme/)
+
+and the extension [automaticDark](https://addons.mozilla.org/en-US/firefox/addon/automatic-dark/),
+which can be configured for listening to system events.