diff --git a/.gitignore b/.gitignore
index b8aac4d..a5197c9 100644
--- a/.gitignore
+++ b/.gitignore
@@ -28,3 +28,4 @@
 /libadwaita-1.4.1.tar.xz
 /libadwaita-1.4.2.tar.xz
 /libadwaita-1.4.3.tar.xz
+/libadwaita-1.5.beta.tar.xz
diff --git a/libadwaita.spec b/libadwaita.spec
index 05db4f4..36ac5da 100644
--- a/libadwaita.spec
+++ b/libadwaita.spec
@@ -1,17 +1,18 @@
 %global apiver  1
 %global gtk_version 4.11.3
+%global glib_version 2.76.0
 
 %global tarball_version %%(echo %{version} | tr '~' '.')
 
 Name:           libadwaita
-Version:        1.4.3
+Version:        1.5~beta
 Release:        %autorelease
 Summary:        Building blocks for modern GNOME applications
 
 # part of src/adw-spring-animation.c is MIT
 License:        LGPL-2.1-or-later AND MIT
 URL:            https://gitlab.gnome.org/GNOME/libadwaita
-Source0:        https://download.gnome.org/sources/%{name}/1.4/%{name}-%{tarball_version}.tar.xz
+Source0:        https://download.gnome.org/sources/%{name}/1.5/%{name}-%{tarball_version}.tar.xz
 
 BuildRequires:  desktop-file-utils
 BuildRequires:  gcc
@@ -22,7 +23,7 @@ BuildRequires:  meson >= 0.59.0
 BuildRequires:  vala
 BuildRequires:  pkgconfig(appstream)
 BuildRequires:  pkgconfig(fribidi)
-BuildRequires:  pkgconfig(glib-2.0)
+BuildRequires:  pkgconfig(glib-2.0) >= %{glib_version}
 BuildRequires:  pkgconfig(gobject-introspection-1.0)
 BuildRequires:  pkgconfig(gtk4) >= %{gtk_version}
 
diff --git a/sources b/sources
index 2465f4b..4c8568a 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (libadwaita-1.4.3.tar.xz) = 3402f2fcf307c07137364f92ec734f0e082080cbd80cde71da6c8859cdf504d343f6bd8816cbaa5523f9f5077cd45b6aa7619f32c2b81bc1c89eeb2eb8b1f8be
+SHA512 (libadwaita-1.5.beta.tar.xz) = c5cce3ff70c1441478b8642eea67a472e38b7bffa0d28b3399d33b2a21655841781178324201ac8828c5609b9787d067b95b1058fa8504a3aa6d2dd08e3f30cc