diff --git a/docs/manifest.json b/docs/manifest.json
index 72b0ca82a21c4ba..b3cccfe61edfd37 100644
--- a/docs/manifest.json
+++ b/docs/manifest.json
@@ -121,6 +121,10 @@
               "title": "Customizing Babel Config",
               "path": "/docs/advanced-features/customizing-babel-config.md"
             },
+            {
+              "title": "Customizing PostCSS Config",
+              "path": "/docs/advanced-features/customizing-postcss-config.md"
+            },
             {
               "title": "Custom Server",
               "path": "/docs/advanced-features/custom-server.md"