diff --git a/packages/mermaid/src/docs/package.json b/packages/mermaid/src/docs/package.json
index 9d8912b04b..57f772613d 100644
--- a/packages/mermaid/src/docs/package.json
+++ b/packages/mermaid/src/docs/package.json
@@ -32,7 +32,7 @@
     "unplugin-vue-components": "^0.25.0",
     "vite": "^4.3.9",
     "vite-plugin-pwa": "^0.16.0",
-    "vitepress": "1.0.0-rc.14",
+    "vitepress": "1.0.0-rc.20",
     "workbox-window": "^7.0.0"
   }
 }
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 6bc2dd314c..8701c60e0c 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -475,8 +475,8 @@ importers:
         specifier: ^0.16.0
         version: 0.16.0(vite@4.3.9)(workbox-build@7.0.0)(workbox-window@7.0.0)
       vitepress:
-        specifier: 1.0.0-rc.14
-        version: 1.0.0-rc.14(@algolia/client-search@4.19.1)(@types/node@18.16.0)(search-insights@2.6.0)
+        specifier: 1.0.0-rc.20
+        version: 1.0.0-rc.20(@algolia/client-search@4.19.1)(@types/node@18.16.0)(postcss@8.4.27)(search-insights@2.6.0)
       workbox-window:
         specifier: ^7.0.0
         version: 7.0.0
@@ -4667,6 +4667,13 @@ packages:
       '@types/mdurl': 1.0.2
     dev: true
 
+  /@types/markdown-it@13.0.1:
+    resolution: {integrity: sha512-SUEb8Frsxs3D5Gg9xek6i6EG6XQ5s+O+ZdQzIPESZVZw3Pv3CPQfjCJBI+RgqZd1IBeu18S0Rn600qpPnEK37w==}
+    dependencies:
+      '@types/linkify-it': 3.0.2
+      '@types/mdurl': 1.0.2
+    dev: true
+
   /@types/mdast@3.0.10:
     resolution: {integrity: sha512-W864tg/Osz1+9f4lrGTZpCSO5/z4608eUp19tbozkq2HJK6i3z1kT0H9tlADXuYIb1YYOBByU4Jsqkk75q48qA==}
     dependencies:
@@ -15572,23 +15579,28 @@ packages:
       - terser
     dev: true
 
-  /vitepress@1.0.0-rc.14(@algolia/client-search@4.19.1)(@types/node@18.16.0)(search-insights@2.6.0):
-    resolution: {integrity: sha512-yChIeXOAcNvVnSVjhziH1vte0uhKb00PuZf7KdIMfx3ixTMAz73Nn+6gREvCv0SdH+anteGUKz5eljv0ygcgGQ==}
+  /vitepress@1.0.0-rc.20(@algolia/client-search@4.19.1)(@types/node@18.16.0)(postcss@8.4.27)(search-insights@2.6.0):
+    resolution: {integrity: sha512-CykMUJ8JLxLcGWek0ew3wln4RYbsOd1+0YzXITTpajggpynm2S331TNkJVOkHrMRc6GYe3y4pS40GfgcW0ZwAw==}
     hasBin: true
     peerDependencies:
       markdown-it-mathjax3: ^4.3.2
+      postcss: ^8.4.30
     peerDependenciesMeta:
       markdown-it-mathjax3:
         optional: true
+      postcss:
+        optional: true
     dependencies:
       '@docsearch/css': 3.5.2
       '@docsearch/js': 3.5.2(@algolia/client-search@4.19.1)(search-insights@2.6.0)
+      '@types/markdown-it': 13.0.1
       '@vue/devtools-api': 6.5.0
       '@vueuse/core': 10.4.1(vue@3.3.4)
       '@vueuse/integrations': 10.4.1(focus-trap@7.5.2)(vue@3.3.4)
       focus-trap: 7.5.2
       mark.js: 8.11.1
       minisearch: 6.1.0
+      postcss: 8.4.27
       shiki: 0.14.4
       vite: 4.4.9(@types/node@18.16.0)
       vue: 3.3.4