diff --git a/.github/workflows/badges.yml b/.github/workflows/badges.yml
index d6dd88f..a3aa072 100644
--- a/.github/workflows/badges.yml
+++ b/.github/workflows/badges.yml
@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout Repository
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
       - name: Download cloc
         run: sudo apt-get update -y && sudo apt-get install -y cloc
       - name: Get the Numbers
diff --git a/.github/workflows/checks.yml b/.github/workflows/checks.yml
index 0d853cc..0600eb1 100644
--- a/.github/workflows/checks.yml
+++ b/.github/workflows/checks.yml
@@ -17,7 +17,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout Repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Download Clang-Format
         run: |
           sudo apt update -qq
@@ -33,7 +33,7 @@ jobs:
     name: Check Compliance with REUSE Specification
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: REUSE Compliance Check
         uses: fsfe/reuse-action@v1
 
@@ -43,12 +43,12 @@ jobs:
     if: github.event_name == 'pull_request'
     steps:
       - name: Checkout Current Repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           path: current
           ref: ${{ github.ref }}
       - name: Checkout Base Repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           path: base
           ref: ${{ github.base_ref }}
@@ -74,7 +74,7 @@ jobs:
     name: Run ShellCheck
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Run ShellCheck
         run: |
           find $GITHUB_WORKSPACE -type f -and \( -name "*.sh" \) | xargs shellcheck
@@ -91,26 +91,26 @@ jobs:
       matrix:
         version:
           - "39"
-          - "rawhide"
+          - "40"
+          - "41"
         session:
           - "gnome-xsession"
-          - "gnome-wayland-nested"
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Download Dependencies
         run: |
-          sudo apt update -qq
-          sudo apt install gettext -qq
+          sudo apt update -q
+          sudo apt install gettext libglib2.0-dev imagemagick
       - name: Build Desktop Cube
         run: make
       - name: Test Desktop Cube
         run: sudo $GITHUB_WORKSPACE/tests/run-test.sh -v ${{ matrix.version }} -s ${{ matrix.session }}
-      - uses: actions/upload-artifact@v2
+      - uses: actions/upload-artifact@v4
         if: failure()
         with:
           name: log_${{ matrix.version }}_${{ matrix.session }}
           path: fail.log
-      - uses: actions/upload-artifact@v2
+      - uses: actions/upload-artifact@v4
         if: failure()
         with:
           name: screen_${{ matrix.version }}_${{ matrix.session }}
diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index 1ddd6c4..850780d 100644
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -14,11 +14,11 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout Repository
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
       - name: Install Dependencies
         run: |
           sudo apt-get update -q
-          sudo apt-get install gettext
+          sudo apt-get install libglib2.0-dev gettext
       - name: Create Release
         run: |
           make zip
diff --git a/docs/changelog.md b/docs/changelog.md
index 5439827..269499d 100644
--- a/docs/changelog.md
+++ b/docs/changelog.md
@@ -5,7 +5,15 @@ SPDX-License-Identifier: CC-BY-4.0
 
 # Changelog of the Desktop Cube Extension
 
-## [Desktop Cube 26](https://github.com/schneegans/Desktop-Cube/releases/tag/v25)
+## [Desktop Cube 27](https://github.com/schneegans/Desktop-Cube/releases/tag/v27)
+
+**Release Date:** TBD
+
+#### Enhancements
+
+- Ported the extension to GNOME 48.
+
+## [Desktop Cube 26](https://github.com/schneegans/Desktop-Cube/releases/tag/v26)
 
 **Release Date:** 2024-08-23
 
diff --git a/metadata.json b/metadata.json
index e1f11c8..21f54f9 100644
--- a/metadata.json
+++ b/metadata.json
@@ -1,19 +1,15 @@
 {
-    "uuid": "desktop-cube@schneegans.github.com",
-    "description": "Indulge in nostalgia with useless 3D effects.",
-    "name": "Desktop Cube",
-    "donations": {
-        "kofi": "schneegans",
-        "github": "schneegans",
-        "paypal": "simonschneegans"
-    },
-    "gettext-domain": "desktop-cube",
-    "settings-schema": "org.gnome.shell.extensions.desktop-cube",
-    "shell-version": [
-        "45",
-        "46",
-        "47"
-    ],
-    "url": "https://github.com/Schneegans/Desktop-Cube",
-    "version": 26
-}
\ No newline at end of file
+  "uuid": "desktop-cube@schneegans.github.com",
+  "description": "Indulge in nostalgia with useless 3D effects.",
+  "name": "Desktop Cube",
+  "donations": {
+    "kofi": "schneegans",
+    "github": "schneegans",
+    "paypal": "simonschneegans"
+  },
+  "gettext-domain": "desktop-cube",
+  "settings-schema": "org.gnome.shell.extensions.desktop-cube",
+  "shell-version": ["45", "46", "47", "48"],
+  "url": "https://github.com/Schneegans/Desktop-Cube",
+  "version": 27
+}
diff --git a/src/Skybox.js b/src/Skybox.js
index 022c881..5043cb1 100644
--- a/src/Skybox.js
+++ b/src/Skybox.js
@@ -17,6 +17,7 @@ import GObject from 'gi://GObject';
 import Shell from 'gi://Shell';
 import GdkPixbuf from 'gi://GdkPixbuf';
 import Cogl from 'gi://Cogl';
+import St from 'gi://St';
 
 import * as Main from 'resource:///org/gnome/shell/ui/main.js';
 
@@ -66,8 +67,9 @@ var SkyboxEffect = GObject.registerClass({
   vfunc_build_pipeline() {
 
     // In the vertex shader, we compute the view space position of the actor's corners.
-    this.add_glsl_snippet(Shell.SnippetHook.VERTEX, 'varying vec4 vsPos;',
-                          'vsPos = cogl_modelview_matrix * cogl_position_in;', false);
+    this.add_glsl_snippet(
+      Cogl.SnippetHook ? Cogl.SnippetHook.VERTEX : Shell.SnippetHook.VERTEX,
+      'varying vec4 vsPos;', 'vsPos = cogl_modelview_matrix * cogl_position_in;', false);
 
     const fragmentDeclares = `
       varying vec4      vsPos;
@@ -102,8 +104,9 @@ var SkyboxEffect = GObject.registerClass({
       cogl_color_out = texture2D(uTexture, vec2(x, y));
     `;
 
-    this.add_glsl_snippet(Shell.SnippetHook.FRAGMENT, fragmentDeclares, fragmentCode,
-                          false);
+    this.add_glsl_snippet(
+      Cogl.SnippetHook ? Cogl.SnippetHook.FRAGMENT : Shell.SnippetHook.FRAGMENT,
+      fragmentDeclares, fragmentCode, false);
   }
 
   // For each draw call, we have to set some uniform values.
@@ -132,7 +135,7 @@ var SkyboxEffect = GObject.registerClass({
 
         try {
           const pixbuf  = GdkPixbuf.Pixbuf.new_from_stream_finish(result);
-          const texture = new Clutter.Image();
+          const texture = new St.ImageContent();
           texture.set_data(pixbuf.get_pixels(), FORMATS[pixbuf.get_n_channels() - 1],
                            pixbuf.get_width(), pixbuf.get_height(),
                            pixbuf.get_rowstride());