diff --git a/qemu-gtk4/Cargo.toml b/qemu-gtk4/Cargo.toml
index c32b77c..286d1bf 100644
--- a/qemu-gtk4/Cargo.toml
+++ b/qemu-gtk4/Cargo.toml
@@ -25,14 +25,11 @@ gst-audio = { package = "gstreamer-audio", version = "0.16.5" }
 [dependencies.gtk]
 package = "gtk4"
 git = "https://github.com/gtk-rs/gtk4-rs"
-rev = "c43025157b12dba1112fad55962966769908a269"
 
 [dependencies.gdk-wl]
 package = "gdk4-wayland"
 git = "https://github.com/gtk-rs/gtk4-rs"
-rev = "c43025157b12dba1112fad55962966769908a269"
 
 [dependencies.gdk-x11]
 package = "gdk4-x11"
 git = "https://github.com/gtk-rs/gtk4-rs"
-rev = "c43025157b12dba1112fad55962966769908a269"
diff --git a/qemu-gtk4/src/application.rs b/qemu-gtk4/src/application.rs
index 776ac1f..ac0a0a2 100644
--- a/qemu-gtk4/src/application.rs
+++ b/qemu-gtk4/src/application.rs
@@ -17,9 +17,8 @@ use zbus::Connection;
 
 mod imp {
     use super::*;
-    use glib::subclass;
 
-    #[derive(Debug)]
+    #[derive(Debug, Default)]
     pub struct QemuApplication {
         pub window: OnceCell<WeakRef<QemuApplicationWindow>>,
         pub conn: OnceCell<Connection>,
@@ -27,24 +26,11 @@ mod imp {
         pub audio: OnceCell<GstAudio>,
     }
 
+    #[glib::object_subclass]
     impl ObjectSubclass for QemuApplication {
         const NAME: &'static str = "QemuApplication";
         type Type = super::QemuApplication;
         type ParentType = gtk::Application;
-        type Interfaces = ();
-        type Instance = subclass::simple::InstanceStruct<Self>;
-        type Class = subclass::simple::ClassStruct<Self>;
-
-        glib::object_subclass!();
-
-        fn new() -> Self {
-            Self {
-                window: OnceCell::new(),
-                conn: OnceCell::new(),
-                addr: OnceCell::new(),
-                audio: OnceCell::new(),
-            }
-        }
     }
 
     impl ObjectImpl for QemuApplication {}
diff --git a/qemu-gtk4/src/console.rs b/qemu-gtk4/src/console.rs
index 3eee907..e0549b0 100644
--- a/qemu-gtk4/src/console.rs
+++ b/qemu-gtk4/src/console.rs
@@ -12,7 +12,6 @@ use qemu_display_listener::{Console, ConsoleEvent as Event, MouseButton};
 
 mod imp {
     use super::*;
-    use glib::subclass;
     use gtk::subclass::prelude::*;
 
     #[derive(Debug, CompositeTemplate, Default)]
@@ -26,25 +25,17 @@ mod imp {
         pub wait_rendering: Cell<usize>,
     }
 
+    #[glib::object_subclass]
     impl ObjectSubclass for QemuConsole {
         const NAME: &'static str = "QemuConsole";
         type Type = super::QemuConsole;
         type ParentType = gtk::Widget;
-        type Interfaces = ();
-        type Instance = subclass::simple::InstanceStruct<Self>;
-        type Class = subclass::simple::ClassStruct<Self>;
-
-        glib::object_subclass!();
-
-        fn new() -> Self {
-            Self::default()
-        }
 
         fn class_init(klass: &mut Self::Class) {
             Self::bind_template(klass);
         }
 
-        fn instance_init(obj: &glib::subclass::InitializingObject<Self::Type>) {
+        fn instance_init(obj: &glib::subclass::InitializingObject<Self>) {
             obj.init_template();
         }
     }
@@ -190,7 +181,7 @@ impl QemuConsole {
                         priv_.area.attach_buffers();
                         let _ = unsafe {
                             glib::Object::from_glib_borrow(priv_.area.as_ptr() as *mut glib::gobject_ffi::GObject)
-                                .emit("render", &[&priv_.area.get_context().as_ref()])
+                                .emit_by_name("render", &[&priv_.area.get_context().as_ref()])
                                 .unwrap()
                         };
                         priv_.area.queue_draw();
diff --git a/qemu-gtk4/src/console_area.rs b/qemu-gtk4/src/console_area.rs
index a68fd57..b519066 100644
--- a/qemu-gtk4/src/console_area.rs
+++ b/qemu-gtk4/src/console_area.rs
@@ -14,9 +14,9 @@ use qemu_display_listener::{Scanout, ScanoutDMABUF, Update};
 
 mod imp {
     use super::*;
-    use glib::subclass;
     use gtk::subclass::prelude::*;
 
+    #[derive(Default)]
     pub struct QemuConsoleArea {
         pub tex_id: Cell<GLuint>,
         pub texture_blit_vao: Cell<GLuint>,
@@ -26,26 +26,11 @@ mod imp {
         pub scanout_size: Cell<(u32, u32)>,
     }
 
+    #[glib::object_subclass]
     impl ObjectSubclass for QemuConsoleArea {
         const NAME: &'static str = "QemuConsoleArea";
         type Type = super::QemuConsoleArea;
         type ParentType = gtk::GLArea;
-        type Interfaces = ();
-        type Instance = subclass::simple::InstanceStruct<Self>;
-        type Class = subclass::simple::ClassStruct<Self>;
-
-        glib::object_subclass!();
-
-        fn new() -> Self {
-            Self {
-                tex_id: Cell::new(0),
-                texture_blit_vao: Cell::new(0),
-                texture_blit_prog: Cell::new(0),
-                texture_blit_flip_prog: Cell::new(0),
-                scanout: Cell::new(None),
-                scanout_size: Cell::new((0, 0)),
-            }
-        }
 
         fn class_init(_klass: &mut Self::Class) {
             // GL loading could be done earlier?
diff --git a/qemu-gtk4/src/window.rs b/qemu-gtk4/src/window.rs
index 05cbb28..b736e98 100644
--- a/qemu-gtk4/src/window.rs
+++ b/qemu-gtk4/src/window.rs
@@ -11,7 +11,6 @@ use qemu_display_listener::Console;
 
 mod imp {
     use super::*;
-    use glib::subclass;
 
     #[derive(Debug, CompositeTemplate)]
     #[template(resource = "/org/qemu/gtk4/window.ui")]
@@ -23,15 +22,11 @@ mod imp {
         pub settings: gio::Settings,
     }
 
+    #[glib::object_subclass]
     impl ObjectSubclass for QemuApplicationWindow {
         const NAME: &'static str = "QemuApplicationWindow";
         type Type = super::QemuApplicationWindow;
         type ParentType = gtk::ApplicationWindow;
-        type Interfaces = ();
-        type Instance = subclass::simple::InstanceStruct<Self>;
-        type Class = subclass::simple::ClassStruct<Self>;
-
-        glib::object_subclass!();
 
         fn new() -> Self {
             Self {
@@ -46,7 +41,7 @@ mod imp {
         }
 
         // You must call `Widget`'s `init_template()` within `instance_init()`.
-        fn instance_init(obj: &glib::subclass::InitializingObject<Self::Type>) {
+        fn instance_init(obj: &glib::subclass::InitializingObject<Self>) {
             obj.init_template();
         }
     }