diff --git a/crates/beaver_shell/src/prefs.rs b/crates/beaver_shell/src/prefs.rs
index bdafbdf..7d25f1d 100644
--- a/crates/beaver_shell/src/prefs.rs
+++ b/crates/beaver_shell/src/prefs.rs
@@ -109,6 +109,7 @@ static EXPERIMENTAL_PREFS: &[&str] = &[
     "dom_notification_enabled",
     "dom_offscreen_canvas_enabled",
     "dom_permissions_enabled",
+    "dom_visual_viewport_enabled",
     "dom_webgl2_enabled",
     "dom_webgpu_enabled",
     "layout_columns_enabled",