diff --git a/config/session.php b/config/session.php
index 38829b77..fae302ae 100644
--- a/config/session.php
+++ b/config/session.php
@@ -1,5 +1,7 @@
 <?php
 
+use Illuminate\Support\Str;
+
 return [
 
     /*
@@ -124,7 +126,7 @@ return [
 
     'cookie' => env(
         'SESSION_COOKIE',
-        str_slug(env('APP_NAME', 'laravel'), '_').'_session'
+        Str::slug(env('APP_NAME', 'laravel'), '_').'_session'
     ),
 
     /*