diff --git a/gtk-4.17.1.tar.xz b/gtk-4.20.0.tar.xz
similarity index 32%
rename from gtk-4.17.1.tar.xz
rename to gtk-4.20.0.tar.xz
index 6ce5cdbed2033c792722c2884ec9fa22ead399b2..3468ee4f61bdd10c5c76757a096c8a1e417ed3ed 100644
--- a/gtk-4.17.1.tar.xz
+++ b/gtk-4.20.0.tar.xz
@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:2bfcfda10d010e301f1a985d9dcae044845a97df43fc7772e63d50d29ac20010
-size 19326572
+oid sha256:79e51e62f7f0cff32904569b0cebc96297d0ebfafa6de8172073c69ce0391a98
+size 15762152
diff --git a/gtk4.spec b/gtk4.spec
index 89be9e49b70349a0daa149a80afeeef5b94581d6..c2b12162f3d26c6c3a1d61ee29dee40453bc0169 100644
--- a/gtk4.spec
+++ b/gtk4.spec
@@ -1,10 +1,10 @@
-%global glib2_version 2.76.0
-%global pango_version 1.52.0
-%global cairo_version 1.18.0
+%global glib2_version 2.82.0
+%global pango_version 1.56.0
+%global cairo_version 1.18.2
 %global gdk_pixbuf_version 2.30.0
 %global gstreamer_version 1.24.0
-%global wayland_protocols_version 1.31
-%global wayland_version 1.21.0
+%global wayland_protocols_version 1.44
+%global wayland_version 1.24.0
 %global epoxy_version 1.4
 
 %global bin_version 4.0.0
@@ -13,12 +13,12 @@
 %bcond_without sysprof
 
 Name:           gtk4
-Version:        4.17.1
-Release:        2
+Version:        4.20.0
+Release:        1
 Summary:        GTK graphical user interface library
 License:        LGPL-2.0-or-later
 URL:            https://www.gtk.org
-Source0:        https://download.gnome.org/sources/gtk/4.17/gtk-%{version}.tar.xz
+Source0:        https://download.gnome.org/sources/gtk/4.20/gtk-%{version}.tar.xz
 
 BuildRequires:  cups-devel
 BuildRequires:  desktop-file-utils
@@ -28,26 +28,29 @@ BuildRequires:  gcc-c++
 BuildRequires:  gettext
 BuildRequires:  gi-docgen
 BuildRequires:  glslc
-BuildRequires:  meson
+BuildRequires:  meson >= 1.5.0
 BuildRequires:  python3-gobject
 BuildRequires:  pkgconfig(avahi-gobject)
 BuildRequires:  pkgconfig(cairo) >= %{cairo_version}
 BuildRequires:  pkgconfig(cairo-gobject) >= %{cairo_version}
-BuildRequires:  pkgconfig(colord)
+BuildRequires:  pkgconfig(colord) >= 0.1.9
 BuildRequires:  pkgconfig(egl)
 BuildRequires:  pkgconfig(epoxy)
+BuildRequires:  pkgconfig(fontconfig)
+BuildRequires:  pkgconfig(harfbuzz) >= 8.4.0
 BuildRequires:  pkgconfig(gdk-pixbuf-2.0) >= %{gdk_pixbuf_version}
 BuildRequires:  pkgconfig(glib-2.0) >= %{glib2_version}
-BuildRequires:  pkgconfig(gobject-introspection-1.0)
+BuildRequires:  pkgconfig(gobject-introspection-1.0) >= 1.84.0
 BuildRequires:  pkgconfig(graphene-gobject-1.0)
 BuildRequires:  pkgconfig(gstreamer-player-1.0) >= %{gstreamer_version}
 BuildRequires:  pkgconfig(json-glib-1.0)
+BuildRequires:  pkgconfig(libdrm)
 BuildRequires:  pkgconfig(libjpeg)
 BuildRequires:  pkgconfig(libpng)
 BuildRequires:  pkgconfig(libtiff-4)
 BuildRequires:  pkgconfig(pango) >= %{pango_version}
 BuildRequires:  pkgconfig(tracker-sparql-3.0)
-BuildRequires:  pkgconfig(vulkan)
+BuildRequires:  pkgconfig(vulkan) >= 1.3
 BuildRequires:  pkgconfig(wayland-client) >= %{wayland_version}
 BuildRequires:  pkgconfig(wayland-cursor) >= %{wayland_version}
 BuildRequires:  pkgconfig(wayland-egl) >= %{wayland_version}
@@ -55,17 +58,17 @@ BuildRequires:  pkgconfig(wayland-protocols) >= %{wayland_protocols_version}
 BuildRequires:  pkgconfig(xcomposite)
 BuildRequires:  pkgconfig(xcursor)
 BuildRequires:  pkgconfig(xdamage)
+BuildRequires:  pkgconfig(xext)
 BuildRequires:  pkgconfig(xfixes)
 BuildRequires:  pkgconfig(xi)
 BuildRequires:  pkgconfig(xinerama)
 BuildRequires:  pkgconfig(xkbcommon)
-BuildRequires:  pkgconfig(xrandr)
+BuildRequires:  pkgconfig(xrandr) >= 1.2.99
 BuildRequires:  pkgconfig(xrender)
 BuildRequires:  /usr/bin/appstream-util
 BuildRequires:  /usr/bin/rst2man
 %if %{with sysprof}
-BuildRequires:  pkgconfig(sysprof-4)
-BuildRequires:  pkgconfig(sysprof-capture-4)
+BuildRequires:  pkgconfig(sysprof-capture-4) >= 3.38.0
 %endif
 
 Requires: adwaita-icon-theme
@@ -144,6 +147,7 @@ desktop-file-validate $RPM_BUILD_ROOT%{_datadir}/applications/*.desktop
 %{_libdir}/girepository-1.0
 %{_mandir}/man1/gtk4-launch.1*
 %{_mandir}/man1/gtk4-update-icon-cache.1*
+%{_datadir}/glib-2.0/schemas/org.gtk.gtk4.Inspector.gschema.xml
 %{_datadir}/glib-2.0/schemas/org.gtk.gtk4.Settings.ColorChooser.gschema.xml
 %{_datadir}/glib-2.0/schemas/org.gtk.gtk4.Settings.Debug.gschema.xml
 %{_datadir}/glib-2.0/schemas/org.gtk.gtk4.Settings.EmojiChooser.gschema.xml
@@ -198,6 +202,9 @@ desktop-file-validate $RPM_BUILD_ROOT%{_datadir}/applications/*.desktop
 %{_mandir}/man1/gtk4-widget-factory.1*
 
 %changelog
+* Sat Aug 30 2025 Funda Wang <fundawang@yeah.net> - 4.20.0-1
+- update to 4.20.0
+
 * Sun Feb 09 2025 Funda Wang <fundawang@yeah.net> - 4.17.1-2
 - requires higher version of vala, as old version produces
   erorrs for some downstream packages