diff --git a/doc/notification.md b/doc/notification.md
index b47c1d5f7c3..ad022cad835 100644
--- a/doc/notification.md
+++ b/doc/notification.md
@@ -37,9 +37,18 @@ $client->api('notification')->markRead(new DateTime('2015/01/01'));
 
 Marks all notifications as read up until the current date, unless a date is given
 
-## Get a single notification using his ID
+### Mark a thread as read using its ID
+
+```php
+$client->api('notification')->markThreadRead($id);
+```
+
+Marks a single thread as read using its ID.
+
+### Get a single thread using its ID
 
 ```php
 $client->api('notification')->id($id);
 ```
-Retrieves single notification data using his ID.
+
+Retrieves single thread's data using its ID.
diff --git a/lib/Github/Api/Notification.php b/lib/Github/Api/Notification.php
index fbaed083518..1759f26132c 100644
--- a/lib/Github/Api/Notification.php
+++ b/lib/Github/Api/Notification.php
@@ -41,7 +41,8 @@ public function all($includingRead = false, $participating = false, DateTime $si
     }
 
     /**
-     * Marks all notifications as read from the current date
+     * Marks all notifications as read from the current date.
+     *
      * Optionally give DateTime to mark as read before that date.
      *
      * @link https://developer.github.com/v3/activity/notifications/#mark-as-read
@@ -60,7 +61,19 @@ public function markRead(DateTime $since = null)
     }
 
     /**
-     * Gets a single notification using his ID.
+     * Mark a single thread as read using its ID.
+     *
+     * @link https://developer.github.com/v3/activity/notifications/#mark-a-thread-as-read
+     *
+     * @param int $id
+     */
+    public function markThreadRead($id)
+    {
+        $this->patch('/notifications/threads/'.$id);
+    }
+
+    /**
+     * Gets a single thread using its ID.
      *
      * @link https://developer.github.com/v3/activity/notifications/#view-a-single-thread
      *
diff --git a/test/Github/Tests/Api/NotificationTest.php b/test/Github/Tests/Api/NotificationTest.php
index 5cbf7fabc11..e34dc171ced 100644
--- a/test/Github/Tests/Api/NotificationTest.php
+++ b/test/Github/Tests/Api/NotificationTest.php
@@ -97,6 +97,20 @@ public function shouldMarkNotificationsAsReadForGivenDate()
         $api->markRead($since);
     }
 
+    /**
+     * @test
+     */
+    public function shouldMarkThreadAsRead()
+    {
+        $id = mt_rand(1, time());
+        $api = $this->getApiMock();
+        $api->expects($this->once())
+            ->method('patch')
+            ->with('/notifications/threads/'.$id);
+
+        $api->markThreadRead($id);
+    }
+
     public function shouldGetNotification()
     {
         $id = mt_rand(1, time());