diff --git a/README.md b/README.md
index 5aea5b5d..b4ccbde8 100644
--- a/README.md
+++ b/README.md
@@ -1,8 +1,8 @@
 # Gio
 
-Immediate mode GUI programs in Go for Android, iOS, macOS, Linux,
-FreeBSD, Windows and WebAssembly. See [gioui.org](https://gioui.org) for details and
-documentation.
+Immediate mode GUI programs in Go for Android, iOS, macOS, Linux, FreeBSD,
+Windows and WebAssembly (experimental). See [gioui.org](https://gioui.org) for
+details and documentation.
 
 [![builds.sr.ht status](https://builds.sr.ht/~eliasnaur/gio.svg)](https://builds.sr.ht/~eliasnaur/gio)