diff --git a/README.md b/README.md
index 15c2e0e..cb006c2 100644
--- a/README.md
+++ b/README.md
@@ -285,6 +285,17 @@ Can be tested in https://webrtc.github.io/test-pages
 
 ## Additional
 
+### Screen sharing
+
+```
+doas apk add xdg-desktop-portal xdg-desktop-portal-wlr
+```
+
+and add to your river config
+```
+riverctl spawn "/usr/libexec/xdg-desktop-portal-wlr"
+```
+
 ### Prevent firefox sharing indicator from taking the entire tile
 
 Add the following lines to river config (before the last `exec` line):