diff --git a/.github/workflows/auto-update-content.yml b/.github/workflows/auto-update-content.yml
index d74395f56..fd8189730 100644
--- a/.github/workflows/auto-update-content.yml
+++ b/.github/workflows/auto-update-content.yml
@@ -28,10 +28,8 @@ jobs:
         id: go_version
         shell: bash
         run: |
-          GO_VERSION=${GO_VERSION:-`make version/go`}
+          GO_VERSION=$(make version/go)
           echo "version=${GO_VERSION}" >> $GITHUB_OUTPUT
-        env:
-          GO_VERSION: ${{ input.go_version }}
       - uses: actions/setup-go@v4
         with:
           go-version: ${{ steps.go_version.outputs.version }}
diff --git a/preview b/preview
index 745af67b9..6c0299e7d 160000
--- a/preview
+++ b/preview
@@ -1 +1 @@
-Subproject commit 745af67b9947da75194f88afa2b5bda746aa9e60
+Subproject commit 6c0299e7d413c620063625c5736d45cee48154c5
diff --git a/themes/vald/layouts/_default/_markup/render-codeblock-mermaid.html b/themes/vald/layouts/_default/_markup/render-codeblock-mermaid.html
new file mode 100644
index 000000000..94ea0cad0
--- /dev/null
+++ b/themes/vald/layouts/_default/_markup/render-codeblock-mermaid.html
@@ -0,0 +1,4 @@
+<pre class="mermaid">
+  {{- .Inner | safeHTML }}
+</pre>
+{{ .Page.Store.Set "hasMermaid" true }}
diff --git a/themes/vald/layouts/_default/single.html b/themes/vald/layouts/_default/single.html
index 54bdcc435..759e28d07 100644
--- a/themes/vald/layouts/_default/single.html
+++ b/themes/vald/layouts/_default/single.html
@@ -18,4 +18,10 @@ <h1 id="title" class="error__title">404 page not found</h1>
  <p class="error__message"><a class="error__link" href="{{ "/" | relURL }}">Page Top</a></p>
 </div>
 {{ end }}
+{{ if .Page.Store.Get "hasMermaid" }}
+  <script type="module">
+    import mermaid from 'https://cdn.jsdelivr.net/npm/mermaid/dist/mermaid.esm.min.mjs';
+    mermaid.initialize({ startOnLoad: true, theme: 'neutral', darkMode: false });
+  </script>
+{{ end }}
 {{ end }}
diff --git a/themes/vald/layouts/partials/style.html b/themes/vald/layouts/partials/style.html
index d0240db23..38f870965 100644
--- a/themes/vald/layouts/partials/style.html
+++ b/themes/vald/layouts/partials/style.html
@@ -10,11 +10,4 @@
   <link rel="stylesheet" type="text/css" href="/css/footer.css">
   <link rel="stylesheet" type="text/css" href="/css/main.css">
   <script type="text/javascript" src="/js/script.js" defer></script>
-  <script src="https://unpkg.com/mermaid/dist/mermaid.min.js"></script>
-  <script>
-    mermaid.initialize ({
-        startOnLoad: true,
-          theme: 'neutral'
-    });
-  </script>
 {{ end }}