diff --git a/config/cache.php b/config/cache.php
index 6c4629d2..69b6a416 100644
--- a/config/cache.php
+++ b/config/cache.php
@@ -1,5 +1,7 @@
 <?php
 
+use Illuminate\Support\Str;
+
 return [
 
     /*
@@ -88,7 +90,7 @@
 
     'prefix' => env(
         'CACHE_PREFIX',
-        str_slug(env('APP_NAME', 'laravel'), '_').'_cache'
+        Str::slug(env('APP_NAME', 'laravel'), '_').'_cache'
     ),
 
 ];