diff --git a/Changelog.md b/Changelog.md
index 2ed5727a..e93dc17f 100644
--- a/Changelog.md
+++ b/Changelog.md
@@ -4,7 +4,8 @@
 
 *Feb 19, 2021*
 
-This release comes with a completely new ui, including a dark theme!
+This release comes with a completely new ui based on
+[tailwindcss](https://tailwindcss.com), including a dark theme!
 Additionally there are some other minor features and bug fixes.
 
 - New Web-UI with light and dark theme (#293).
diff --git a/Contributing.md b/Contributing.md
index 58cb5376..40d71929 100644
--- a/Contributing.md
+++ b/Contributing.md
@@ -61,10 +61,7 @@ processes.
 The web frontend is written in [Elm](https://elm-lang.org), which is a
 nice functional language that compiles to javascript. The frontend is
 included in the http/restserver component. The CSS is provided by
-[Fomantic-UI](https://fomantic-ui.com/), where a [custom
-build](https://github.com/eikek/fomantic-slim-default) of it is used
-to avoid dependency to a google font and jquery (all javascript
-modules are removed).
+[TailwindCSS](https://tailwindcss.com/)..
 
 The [development](https://docspell.org/docs/dev/building/) page
 contains some tips to get started.