diff --git a/src/Extensions/KeyboardButton.php b/src/Extensions/KeyboardButton.php
index d91fcbb..1ac0881 100644
--- a/src/Extensions/KeyboardButton.php
+++ b/src/Extensions/KeyboardButton.php
@@ -19,6 +19,11 @@ class KeyboardButton implements \JsonSerializable
      */
     protected $url;
 
+    /**
+     * @var array
+     */
+    protected $webApp;
+
     /**
      * @var string
      */
@@ -73,6 +78,18 @@ public function url($url)
         return $this;
     }
 
+    /**
+     * @return $this
+     */
+    public function webApp($url)
+    {
+        $this->webApp = [
+            'url' => $url,
+        ];
+
+        return $this;
+    }
+
     /**
      * @param $callbackData
      * @return $this
@@ -140,6 +157,7 @@ public function jsonSerialize()
     {
         return Collection::make([
             'url' => $this->url,
+            'web_app' => $this->webApp,
             'callback_data' => $this->callbackData,
             'switch_inline_query' => $this->switchInlineQuery,
             'switch_inline_query_current_chat' => $this->switchInlineQueryCurrentChat,