diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index f8cb3a97..06a98ffa 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -142,7 +142,7 @@ Compass/
 
 | Layer    | Technology                       |
 | -------- | -------------------------------- |
-| Frontend | Next.js 14, React 18, TypeScript |
+| Frontend | Next.js 16, React 19, TypeScript |
 | Styling  | Tailwind CSS                     |
 | Backend  | Express.js, Node.js              |
 | Database | PostgreSQL (Supabase)            |
diff --git a/backend/email/README.md b/backend/email/README.md
index 992a50de..074c852c 100644
--- a/backend/email/README.md
+++ b/backend/email/README.md
@@ -18,18 +18,6 @@ yarn dev
 
 Open [localhost:3001](http://localhost:3001) with your browser to see the result.
 
-### Notes
-
-Right now, I can't make the email server run without breaking the backend API and web, as they require different versions of react.
-
-To run the email server, temporarily install the deps in this folder. They require react 19.
-
-```bash
-yarn add -D @react-email/preview-server react-email
-```
-
-When you are done, reinstall react 18.2 by running `yarn clean-install` at the root so that you can run the backend and web servers again.
-
 ## Useful commands
 
 ```bash