diff --git a/docs/sources/auth/google.md b/docs/sources/auth/google.md
index 5360c522cfd..7a8a115a8c7 100644
--- a/docs/sources/auth/google.md
+++ b/docs/sources/auth/google.md
@@ -55,3 +55,6 @@ You may allow users to sign-up via Google authentication by setting the
 `allow_sign_up` option to `true`. When this option is set to `true`, any
 user successfully authenticating via Google authentication will be
 automatically signed up.
+
+You may specify a domain to be passed as `hd` query parameter accepted by Google's
+OAuth 2.0 authentication API. Refer to Google's OAuth [documentation](https://developers.google.com/identity/openid-connect/openid-connect#hd-param).