diff --git a/apps/reference/docs/guides/functions.mdx b/apps/reference/docs/guides/functions.mdx
index 5c358426ad1..e056527dab8 100644
--- a/apps/reference/docs/guides/functions.mdx
+++ b/apps/reference/docs/guides/functions.mdx
@@ -313,5 +313,6 @@ serve(async (req) => {
   - Cannot write to File System
 - Edge Functions
   - Local development - only one function at a time
-  - Supabase Functions only supports `GET` and `POST` requests.
+  - Supabase Functions only supports `POST`, `OPTIONS`, and `GET` requests.
+  - Serving of HTML content is not supported (`GET` requests that return `text/html` will be rewritten to `text/plain`).
   - Supabase Functions do not support HTML responses.