diff --git a/.github/workflows/doc.yaml b/.github/workflows/doc.yaml
index 2191b06..76fd649 100644
--- a/.github/workflows/doc.yaml
+++ b/.github/workflows/doc.yaml
@@ -23,6 +23,10 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v4
+      - uses: actions/checkout@v4
+        with:
+          repository: 'myrrhlab/vaultix-mdbook-custom'
+          path: './doc/theme'
       - name: Setup Pages
         uses: actions/configure-pages@v5
       - name: Install mdBook
diff --git a/doc/src/SUMMARY.md b/doc/src/SUMMARY.md
index ebbe3d0..a1e6635 100644
--- a/doc/src/SUMMARY.md
+++ b/doc/src/SUMMARY.md
@@ -2,9 +2,9 @@
 
 - [Intro](./intro.md)
 - [Prerequisits](./prerequisits.md)
-- [setup](./setup.md)
-  - [flake Option](./flake-option.md)
-  - [nixos Option](./nixos-option.md)
+- [Setup](./setup.md)
+  - [Flake Option](./flake-option.md)
+  - [NixOS Option](./nixos-option.md)
 - [Nix Apps](./nix-apps.md)
 - [Workflow](./workflow.md)
 - [Development](./develop.md)