diff --git a/composer.lock b/composer.lock
index 09f2403..e259820 100644
--- a/composer.lock
+++ b/composer.lock
@@ -1268,7 +1268,7 @@
             "source": {
                 "type": "git",
                 "url": "https://github.com/xtrime-ru/MadelineProto.git",
-                "reference": "2a00bba1fbf78d49050d003d0b5b53fc71720018"
+                "reference": "09512b4ab58a48cf24a5022811b2130309b62893"
             },
             "require": {
                 "amphp/amp": "^2.0",
@@ -1339,7 +1339,7 @@
                 "telegram",
                 "video"
             ],
-            "time": "2019-06-21T18:22:59+00:00"
+            "time": "2019-06-22T17:03:46+00:00"
         },
         {
             "name": "danog/magicalserializer",
diff --git a/config.php b/config.php
index 5880d45..0f8717d 100644
--- a/config.php
+++ b/config.php
@@ -1,5 +1,9 @@
 <?php
 
+if (getenv('SWOOLE_SERVER_ADDRESS')) {
+    throw new UnexpectedValueException('Please, update .env file! See .env.example');
+}
+
 return [
     'server' => [
         'address' => (string)getenv('SERVER_ADDRESS'),
@@ -30,7 +34,8 @@ return [
             ]
         ],
         'serialization' => [
-            'serialization_interval' => 36000
+            'serialization_interval' => 300,
+            'cleanup_before_serialization' => true,
         ],
     ],
     'api' => [