diff --git a/README.md b/README.md
index ededaea..fad4ec5 100644
--- a/README.md
+++ b/README.md
@@ -4,7 +4,7 @@
 **Tags:** OStatus, fediverse, activitypub, activitystream  
 **Requires at least:** 4.7  
 **Tested up to:** 5.8  
-**Stable tag:** 0.13.0  
+**Stable tag:** 0.13.1  
 **Requires PHP:** 5.6  
 **License:** MIT  
 **License URI:** http://opensource.org/licenses/MIT  
@@ -88,6 +88,10 @@ Where 'blog' is the path to the subdirectory at which your blog resides.
 
 Project maintained on GitHub at [pfefferle/wordpress-activitypub](https://github.com/pfefferle/wordpress-activitypub).
 
+### 0.13.1 ###
+
+* fix Inbox issue
+
 ### 0.13.0 ###
 
 * add Autor URL and WebFinger health checks
diff --git a/activitypub.php b/activitypub.php
index c98b50c..a52a6d5 100644
--- a/activitypub.php
+++ b/activitypub.php
@@ -3,7 +3,7 @@
  * Plugin Name: ActivityPub
  * Plugin URI: https://github.com/pfefferle/wordpress-activitypub/
  * Description: The ActivityPub protocol is a decentralized social networking protocol based upon the ActivityStreams 2.0 data format.
- * Version: 0.13.0
+ * Version: 0.13.1
  * Author: Matthias Pfefferle
  * Author URI: https://notiz.blog/
  * License: MIT
diff --git a/includes/rest/class-inbox.php b/includes/rest/class-inbox.php
index 2b99b62..4dcbd8c 100644
--- a/includes/rest/class-inbox.php
+++ b/includes/rest/class-inbox.php
@@ -34,11 +34,6 @@ class Inbox {
 					'args'                => self::shared_inbox_request_parameters(),
 					'permission_callback' => '__return_true',
 				),
-				array(
-					'methods'             => \WP_REST_Server::READABLE,
-					'callback'            => array( '\Activitypub\Rest\Inbox', 'inbox_get' ),
-					'permission_callback' => '__return_true',
-				),
 			)
 		);
 
@@ -52,7 +47,7 @@ class Inbox {
 				),
 				array(
 					'methods'             => \WP_REST_Server::READABLE,
-					'callback'            => array( '\Activitypub\Rest\Inbox', 'inbox_get' ),
+					'callback'            => array( '\Activitypub\Rest\Inbox', 'user_inbox_get' ),
 					'permission_callback' => '__return_true',
 				),
 			)
@@ -94,7 +89,8 @@ class Inbox {
 	 * @param  WP_REST_Request   $request
 	 * @return WP_REST_Response
 	 */
-	public static function inbox_get( $request ) {
+	public static function user_inbox_get( $request ) {
+		$user_id = $request->get_param( 'user_id' );
 		$page = $request->get_param( 'page', 0 );
 
 		/*
diff --git a/readme.txt b/readme.txt
index c816df4..e6dc463 100644
--- a/readme.txt
+++ b/readme.txt
@@ -4,7 +4,7 @@ Donate link: https://notiz.blog/donate/
 Tags: OStatus, fediverse, activitypub, activitystream
 Requires at least: 4.7
 Tested up to: 5.8
-Stable tag: 0.13.0
+Stable tag: 0.13.1
 Requires PHP: 5.6
 License: MIT
 License URI: http://opensource.org/licenses/MIT
@@ -88,6 +88,10 @@ Where 'blog' is the path to the subdirectory at which your blog resides.
 
 Project maintained on GitHub at [pfefferle/wordpress-activitypub](https://github.com/pfefferle/wordpress-activitypub).
 
+= 0.13.1 =
+
+* fix Inbox issue
+
 = 0.13.0 =
 
 * add Autor URL and WebFinger health checks