diff --git a/README.md b/README.md
index 8bafb91..ad5d03d 100644
--- a/README.md
+++ b/README.md
@@ -15,13 +15,14 @@ with `.sty` to the source files of your presentation. As of now, fonts, colors
 and the section indicator are hardcoded into the theme. For the demo you need
 
 * XeLaTeX,
-* the [Fira Sans](https://github.com/mozilla/Fira) and Mono font,
-* TikZ and
-* the Python package [Pygments](http://pygments.org/) and the `pygmentize` binary.
+* the [Fira Sans](https://github.com/mozilla/Fira) and Mono font and
+* TikZ.
 
 Depending on the Linux distribution, the packaged name of Fira Sans might be
 `Fira Sans OT` instead of `Fira Sans`. In that case, you may have to edit
-`beamerfontthememetropolis.sty`.
+`beamerfontthememetropolis.sty`. For debugging purposes, the demo slides can be
+compiled without XeLaTeX and the Fira fonts by commenting out
+`\usefonttheme{metropolis}`.
 
 
 ### Usage