diff --git a/includes/model/class-user.php b/includes/model/class-user.php
index 5bb1e77..2cee714 100644
--- a/includes/model/class-user.php
+++ b/includes/model/class-user.php
@@ -100,6 +100,10 @@ class User {
 		return $this->get_url();
 	}
 
+	public function get_at_url() {
+		return \esc_url( \trailingslashit( get_home_url() ) . '@' . $this->get_username() );
+	}
+
 	public function get_username() {
 		return \esc_attr( \get_the_author_meta( 'login', $this->user_id ) );
 	}
diff --git a/includes/rest/class-webfinger.php b/includes/rest/class-webfinger.php
index 9b07a95..ec76686 100644
--- a/includes/rest/class-webfinger.php
+++ b/includes/rest/class-webfinger.php
@@ -53,12 +53,16 @@ class Webfinger {
 			return $user;
 		}
 
+		$aliases = array(
+			$user->get_url(),
+			$user->get_canonical_url(),
+			$user->get_at_url(),
+		);
+
 		$json = array(
 			'subject' => $resource,
-			'aliases' => array(
-				$user->get_url(),
-			),
-			'links' => array(
+			'aliases' => array_values( array_unique( $aliases ) ),
+			'links'   => array(
 				array(
 					'rel'  => 'self',
 					'type' => 'application/activity+json',