diff --git a/window.go b/window.go
index 3735e82..e90dda4 100644
--- a/window.go
+++ b/window.go
@@ -32,6 +32,7 @@ const (
 	EventNameWindowCmdRestore                         = "window.cmd.restore"
 	EventNameWindowCmdShow                            = "window.cmd.show"
 	EventNameWindowCmdUnmaximize                      = "window.cmd.unmaximize"
+	EventNameWindowCmdUpdateCustomOptions             = "window.cmd.update.custom.options"
 	EventNameWindowCmdWebContentsCloseDevTools        = "window.cmd.web.contents.close.dev.tools"
 	EventNameWindowCmdWebContentsOpenDevTools         = "window.cmd.web.contents.open.dev.tools"
 	EventNameWindowCmdWebContentsExecuteJavaScript    = "window.cmd.web.contents.execute.javascript"
@@ -54,6 +55,7 @@ const (
 	EventNameWindowEventDidGetRedirectRequest         = "window.event.did.get.redirect.request"
 	EventNameWindowEventWebContentsExecutedJavaScript = "window.event.web.contents.executed.javascript"
 	EventNameWindowEventWillNavigate                  = "window.event.will.navigate"
+	EventNameWindowEventUpdatedCustomOptions          = "window.event.updated.custom.options"
 )
 
 // Title bar styles
@@ -531,3 +533,15 @@ func (w *Window) Unmaximize() (err error) {
 	_, err = synchronousEvent(w.ctx, w, w.w, Event{Name: EventNameWindowCmdUnmaximize, TargetID: w.id}, EventNameWindowEventUnmaximize)
 	return
 }
+
+// UpdateCustomOptions updates the window custom options
+func (w *Window) UpdateCustomOptions(o WindowCustomOptions) (err error) {
+	if err = w.ctx.Err(); err != nil {
+		return
+	}
+	w.m.Lock()
+	w.o.Custom = &o
+	w.m.Unlock()
+	_, err = synchronousEvent(w.ctx, w, w.w, Event{WindowOptions: w.o, Name: EventNameWindowCmdUpdateCustomOptions, TargetID: w.id}, EventNameWindowEventUpdatedCustomOptions)
+	return
+}
diff --git a/window_test.go b/window_test.go
index 5b3dbf9..0bf5daf 100644
--- a/window_test.go
+++ b/window_test.go
@@ -68,6 +68,7 @@ func TestWindow_Actions(t *testing.T) {
 	testObjectAction(t, func() error { return w.Restore() }, w.object, wrt, "{\"name\":\""+EventNameWindowCmdRestore+"\",\"targetID\":\""+w.id+"\"}\n", EventNameWindowEventRestore)
 	testObjectAction(t, func() error { return w.Show() }, w.object, wrt, "{\"name\":\""+EventNameWindowCmdShow+"\",\"targetID\":\""+w.id+"\"}\n", EventNameWindowEventShow)
 	assert.Equal(t, true, w.IsShown())
+	testObjectAction(t, func() error { return w.UpdateCustomOptions(WindowCustomOptions{HideOnClose: astikit.BoolPtr(true)}) }, w.object, wrt, "{\"name\":\""+EventNameWindowCmdUpdateCustomOptions+"\",\"targetID\":\""+w.id+"\",\"windowOptions\":{\"height\":2,\"show\":true,\"width\":1,\"x\":4,\"y\":6,\"custom\":{\"hideOnClose\":true}}}\n", EventNameWindowCmdUpdateCustomOptions)
 	testObjectAction(t, func() error { return w.Unmaximize() }, w.object, wrt, "{\"name\":\""+EventNameWindowCmdUnmaximize+"\",\"targetID\":\""+w.id+"\"}\n", EventNameWindowEventUnmaximize)
 	testObjectAction(t, func() error { return w.ExecuteJavaScript("console.log('test');") }, w.object, wrt, "{\"name\":\""+EventNameWindowCmdWebContentsExecuteJavaScript+"\",\"targetID\":\""+w.id+"\",\"code\":\"console.log('test');\"}\n", EventNameWindowEventWebContentsExecutedJavaScript)
 }