diff --git a/flake.lock b/flake.lock
index deef5d0..191ab9c 100644
--- a/flake.lock
+++ b/flake.lock
@@ -23,32 +23,32 @@
         ]
       },
       "locked": {
-        "lastModified": 1700392168,
-        "narHash": "sha256-v5LprEFx3u4+1vmds9K0/i7sHjT0IYGs7u9v54iz/OA=",
+        "lastModified": 1700814205,
+        "narHash": "sha256-lWqDPKHRbQfi+zNIivf031BUeyciVOtwCwTjyrhDB5g=",
         "owner": "nix-community",
         "repo": "home-manager",
-        "rev": "28535c3a34d79071f2ccb68671971ce0c0984d7e",
+        "rev": "aeb2232d7a32530d3448318790534d196bf9427a",
         "type": "github"
       },
       "original": {
         "owner": "nix-community",
-        "ref": "release-23.05",
+        "ref": "release-23.11",
         "repo": "home-manager",
         "type": "github"
       }
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1701053011,
-        "narHash": "sha256-8QQ7rFbKFqgKgLoaXVJRh7Ik5LtI3pyBBCfOnNOGkF0=",
+        "lastModified": 1701156937,
+        "narHash": "sha256-jpMJOFvOTejx211D8z/gz0ErRtQPy6RXxgD2ZB86mso=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "5b528f99f73c4fad127118a8c1126b5e003b01a9",
+        "rev": "7c4c20509c4363195841faa6c911777a134acdf3",
         "type": "github"
       },
       "original": {
         "id": "nixpkgs",
-        "ref": "nixos-23.05",
+        "ref": "nixos-23.11",
         "type": "indirect"
       }
     },
diff --git a/flake.nix b/flake.nix
index 924a14e..f549431 100644
--- a/flake.nix
+++ b/flake.nix
@@ -2,9 +2,9 @@
   description = "NixOS/Darwin system configuration";
 
   inputs = {
-    nixpkgs.url = "nixpkgs/nixos-23.05";
+    nixpkgs.url = "nixpkgs/nixos-23.11";
     home-manager = {
-      url = "github:nix-community/home-manager/release-23.05";
+      url = "github:nix-community/home-manager/release-23.11";
       inputs.nixpkgs.follows = "nixpkgs";
     };
     firefox-gnome-theme = {
diff --git a/modules/desktop/gnome.nix b/modules/desktop/gnome.nix
index fcb3633..f9e4352 100644
--- a/modules/desktop/gnome.nix
+++ b/modules/desktop/gnome.nix
@@ -104,8 +104,8 @@ in {
         window-gap = 8;
       };
       "org/gnome/desktop/background" = {
-        picture-uri = "file://${pkgs.gnome.gnome-backgrounds}/share/backgrounds/gnome/adwaita-l.webp";
-        picture-uri-dark = "file://${pkgs.gnome.gnome-backgrounds}/share/backgrounds/gnome/adwaita-d.webp";
+        picture-uri = "file://${pkgs.gnome.gnome-backgrounds}/share/backgrounds/gnome/adwaita-l.jpg";
+        picture-uri-dark = "file://${pkgs.gnome.gnome-backgrounds}/share/backgrounds/gnome/adwaita-d.jpg";
       };
       "org/gtk/settings/file-chooser" = {
         show-hidden = true;
@@ -152,7 +152,7 @@ in {
       };
     };
 
-    fonts.fonts = with pkgs; [
+    fonts.packages = with pkgs; [
       noto-fonts
       ubuntu_font_family
     ];
diff --git a/overlays/gnome.nix b/overlays/gnome.nix
index 838f61f..b0d9c09 100644
--- a/overlays/gnome.nix
+++ b/overlays/gnome.nix
@@ -3,8 +3,8 @@ self: super:
   gnome = super.gnome.overrideScope' (gself: gsuper: {
     mutter = gsuper.mutter.overrideAttrs (oldAttrs: {
       src = super.fetchurl {
-        url = "https://gitlab.gnome.org/Community/Ubuntu/mutter/-/archive/triple-buffering-v4-44/mutter-triple-buffering-v4-44.tar.gz";
-        sha256 = "UhCbdAh5AtYWTi0GX8RmexUAS0nbvISPuErX/8NTdoA=";
+        url = "https://gitlab.gnome.org/Community/Ubuntu/mutter/-/archive/triple-buffering-v4-45/mutter-triple-buffering-v4-45.tar.gz";
+        sha256 = "E+AdsQdotqlH/kYskl+Fwv0i+UTK7mfdkJ+zlfLdU9o=";
       };
     });
   });