diff --git a/README.md b/README.md
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@@ -16,7 +16,7 @@ Since Firebase is a hosted service, your app can use the Firebase JS library to
 
 ### Authentication
 
-Firebase [Authentication](https://www.firebase.com/docs/web/guide/user-auth.html) makes it easy to add authentication to your app via Facebook, Github, Persona, Twitter, or email / password login. If you already have your own user authentication system, Firebase can integrate with your servers as well.
+Firebase [Authentication](https://www.firebase.com/docs/web/guide/user-auth.html) makes it easy to add authentication to your app via Facebook, Github, Persona, Twitter, Google, or email / password login. If you already have your own user authentication system, Firebase can integrate with your servers as well.
 
 ### Realtime Database