diff --git a/cmd/go.mod b/cmd/go.mod
index 3915838e..62fc4478 100644
--- a/cmd/go.mod
+++ b/cmd/go.mod
@@ -3,7 +3,7 @@ module gioui.org/cmd
 go 1.13
 
 require (
-	gioui.org v0.0.0-20191014143932-b30bf3cef8b1
+	gioui.org v0.0.0-20191027141215-a8e5e7a788ed
 	github.com/chromedp/chromedp v0.4.0
 	golang.org/x/image v0.0.0-20190802002840-cff245a6509b
 	golang.org/x/sync v0.0.0-20190423024810-112230192c58
diff --git a/cmd/go.sum b/cmd/go.sum
index c4c27f9f..4b99548c 100644
--- a/cmd/go.sum
+++ b/cmd/go.sum
@@ -1,6 +1,6 @@
 dmitri.shuralyov.com/gpu/mtl v0.0.0-20190408044501-666a987793e9/go.mod h1:H6x//7gZCb22OMCxBHrMx7a5I7Hp++hsVxbQ4BYO7hU=
-gioui.org v0.0.0-20191014143932-b30bf3cef8b1 h1:BhetOsT5IaDOb5cLxWNRBhUToU8C1/WI2nb5sTYKDQE=
-gioui.org v0.0.0-20191014143932-b30bf3cef8b1/go.mod h1:KqFFi2Dq5gYA3FJ0sDOt8OBXoMsuxMtE8v2f0JExXAY=
+gioui.org v0.0.0-20191027141215-a8e5e7a788ed h1:ikFvaCMPYbvN0vskx/XalHoa1DXybnlqinHBmBJpOMo=
+gioui.org v0.0.0-20191027141215-a8e5e7a788ed/go.mod h1:KqFFi2Dq5gYA3FJ0sDOt8OBXoMsuxMtE8v2f0JExXAY=
 github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo=
 github.com/chromedp/cdproto v0.0.0-20190812224334-39ef923dcb8d h1:00kLGv5nKzpFchNhGDXDRbKtYx/WoT983Ka2t8/pzRE=
 github.com/chromedp/cdproto v0.0.0-20190812224334-39ef923dcb8d/go.mod h1:0YChpVzuLJC5CPr+x3xkHN6Z8KOSXjNbL7qV8Wc4GW0=
diff --git a/cmd/gogio/testdata/red.go b/cmd/gogio/testdata/red.go
index 525aea68..481b6a31 100644
--- a/cmd/gogio/testdata/red.go
+++ b/cmd/gogio/testdata/red.go
@@ -9,6 +9,7 @@ import (
 
 	"gioui.org/app"
 	"gioui.org/f32"
+	"gioui.org/io/system"
 	"gioui.org/op"
 	"gioui.org/op/paint"
 )
@@ -29,9 +30,9 @@ func loop(w *app.Window) error {
 	for {
 		e := <-w.Events()
 		switch e := e.(type) {
-		case app.DestroyEvent:
+		case system.DestroyEvent:
 			return e.Err
-		case app.FrameEvent:
+		case system.FrameEvent:
 			ops.Reset()
 			paint.ColorOp{Color: background}.Add(ops)
 			paint.PaintOp{Rect: f32.Rectangle{Max: f32.Point{