diff --git a/pkgs/desktops/gnome/core/gnome-backgrounds/default.nix b/pkgs/desktops/gnome/core/gnome-backgrounds/default.nix
index 3710866a41a8..aff914578662 100644
--- a/pkgs/desktops/gnome/core/gnome-backgrounds/default.nix
+++ b/pkgs/desktops/gnome/core/gnome-backgrounds/default.nix
@@ -8,11 +8,11 @@
 
 stdenv.mkDerivation rec {
   pname = "gnome-backgrounds";
-  version = "44.0";
+  version = "45.beta";
 
   src = fetchurl {
     url = "mirror://gnome/sources/gnome-backgrounds/${lib.versions.major version}/${pname}-${version}.tar.xz";
-    sha256 = "SoOTs4cTXypqQkoaDDrJTgdCtiuCNaCSPJKfUeBL4E4=";
+    sha256 = "v9/fZsSzLcf3bHFgHeWrfR0XB/JYcZMeEeKNe4Ppb+c=";
   };
 
   patches = [