diff --git a/public/views/codimd/foot.ejs b/public/views/codimd/foot.ejs
index d3bfa1f0..2b0ee0f5 100644
--- a/public/views/codimd/foot.ejs
+++ b/public/views/codimd/foot.ejs
@@ -10,7 +10,7 @@
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+<script src="https://cdnjs.cloudflare.com/ajax/libs/mermaid/8.6.4/mermaid.min.js" integrity="sha512-kaov70mb/084wHYwVZLxTsCaq04AED9ksQaxgXXxbciHDdD8HAR8z7wNEfLLg8LgM5eu4J+tCfAsaIFoYsdVfw==" crossorigin="anonymous" defer></script>
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diff --git a/public/views/pretty.ejs b/public/views/pretty.ejs
index f07d9059..361cfe0a 100644
--- a/public/views/pretty.ejs
+++ b/public/views/pretty.ejs
@@ -88,7 +88,7 @@
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-<script src="https://cdnjs.cloudflare.com/ajax/libs/mermaid/8.4.8/mermaid.min.js" integrity="sha256-lyWCDMnMeZiXRi7Zl54sZGKYmgQs4izcT7+tKc+KUBk=" crossorigin="anonymous" defer></script>
+<script src="https://cdnjs.cloudflare.com/ajax/libs/mermaid/8.6.4/mermaid.min.js" integrity="sha512-kaov70mb/084wHYwVZLxTsCaq04AED9ksQaxgXXxbciHDdD8HAR8z7wNEfLLg8LgM5eu4J+tCfAsaIFoYsdVfw==" crossorigin="anonymous" defer></script>
 <script src="https://cdn.jsdelivr.net/npm/@hackmd/emojify.js@2.1.0/dist/js/emojify-browser.min.js" integrity="sha256-swgfXtqk2bC98KzPoE8tXRz5tmrzpjJWhhXlhYo/wRA=" crossorigin="anonymous" defer></script>
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diff --git a/public/views/slide.ejs b/public/views/slide.ejs
index d5f848f8..3a7ea43c 100644
--- a/public/views/slide.ejs
+++ b/public/views/slide.ejs
@@ -100,7 +100,7 @@
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-        <script src="https://cdnjs.cloudflare.com/ajax/libs/mermaid/8.4.8/mermaid.min.js" integrity="sha256-lyWCDMnMeZiXRi7Zl54sZGKYmgQs4izcT7+tKc+KUBk=" crossorigin="anonymous" defer></script>
+        <script src="https://cdnjs.cloudflare.com/ajax/libs/mermaid/8.6.4/mermaid.min.js" integrity="sha512-kaov70mb/084wHYwVZLxTsCaq04AED9ksQaxgXXxbciHDdD8HAR8z7wNEfLLg8LgM5eu4J+tCfAsaIFoYsdVfw==" crossorigin="anonymous" defer></script>
         <script src="https://cdn.jsdelivr.net/npm/@hackmd/emojify.js@2.1.0/dist/js/emojify-browser.min.js" integrity="sha256-swgfXtqk2bC98KzPoE8tXRz5tmrzpjJWhhXlhYo/wRA=" crossorigin="anonymous" defer></script>
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