diff --git a/README.md b/README.md
index deed7137..74e2f235 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # Gio
 
-Immediate mode GUI programs in Go for Android, iOS, macOS, Linux, FreeBSD,
+Immediate mode GUI programs in Go for Android, iOS, macOS, Linux, FreeBSD, OpenBSD,
 Windows, and WebAssembly (experimental). See [gioui.org](https://gioui.org) for
 details and documentation.