diff --git a/static_src/shared/md-helper.js b/static_src/shared/md-helper.js
index 7e7c8ca..25db9bc 100644
--- a/static_src/shared/md-helper.js
+++ b/static_src/shared/md-helper.js
@@ -5,7 +5,7 @@
 export const DEFAULT_MD_PROJECTS = new Set(['vulnz', 'vulnz-old', 'twpowertools', 'translateselectedtext']);
 
 /** @type {Set} Projects that allow users to opt into Markdown rendering. */
-export const AVAILABLE_MD_PROJECTS = new Set([...DEFAULT_MD_PROJECTS]);
+export const AVAILABLE_MD_PROJECTS = new Set([...DEFAULT_MD_PROJECTS, 'pigweed']);
 
 /** @type {Set} Authors whose comments will not be rendered as Markdown. */
 const BLOCKLIST = new Set(['sheriffbot@sheriffbot-1182.iam.gserviceaccount.com',