diff --git a/config/app.php b/config/app.php
index 9d91e82..5a06d38 100644
--- a/config/app.php
+++ b/config/app.php
@@ -11,9 +11,9 @@
     | Application Name
     |--------------------------------------------------------------------------
     |
-    | This value is the name of your application. This value is used when the
+    | This value is the name of your application, which will be used when the
     | framework needs to place the application's name in a notification or
-    | any other location as required by the application or its packages.
+    | other UI elements where an application name needs to be displayed.
     |
     */
 
@@ -52,26 +52,24 @@
     |
     | This URL is used by the console to properly generate URLs when using
     | the Artisan command line tool. You should set this to the root of
-    | your application so that it is used when running Artisan tasks.
+    | the application so that it's available within Artisan commands.
     |
     */
 
     'url' => env('APP_URL', 'http://localhost'),
 
-    'asset_url' => env('ASSET_URL'),
-
     /*
     |--------------------------------------------------------------------------
     | Application Timezone
     |--------------------------------------------------------------------------
     |
     | Here you may specify the default timezone for your application, which
-    | will be used by the PHP date and date-time functions. We have gone
-    | ahead and set this to a sensible default for you out of the box.
+    | will be used by the PHP date and date-time functions. The timezone
+    | is set to "UTC" by default as it is suitable for most use cases.
     |
     */
 
-    'timezone' => 'UTC',
+    'timezone' => env('APP_TIMEZONE', 'UTC'),
 
     /*
     |--------------------------------------------------------------------------
@@ -79,53 +77,37 @@
     |--------------------------------------------------------------------------
     |
     | The application locale determines the default locale that will be used
-    | by the translation service provider. You are free to set this value
-    | to any of the locales which will be supported by the application.
+    | by Laravel's translation / localization methods. This option can be
+    | set to any locale for which you plan to have translation strings.
     |
     */
 
-    'locale' => 'ro',
+    'locale' => env('APP_LOCALE', 'ro'),
 
-    /*
-    |--------------------------------------------------------------------------
-    | Application Fallback Locale
-    |--------------------------------------------------------------------------
-    |
-    | The fallback locale determines the locale to use when the current one
-    | is not available. You may change the value to correspond to any of
-    | the language folders that are provided through your application.
-    |
-    */
+    'fallback_locale' => env('APP_FALLBACK_LOCALE', 'en'),
 
-    'fallback_locale' => 'en',
-
-    /*
-    |--------------------------------------------------------------------------
-    | Faker Locale
-    |--------------------------------------------------------------------------
-    |
-    | This locale will be used by the Faker PHP library when generating fake
-    | data for your database seeds. For example, this will be used to get
-    | localized telephone numbers, street address information and more.
-    |
-    */
-
-    'faker_locale' => 'ro_RO',
+    'faker_locale' => env('APP_FAKER_LOCALE', 'ro_RO'),
 
     /*
     |--------------------------------------------------------------------------
     | Encryption Key
     |--------------------------------------------------------------------------
     |
-    | This key is used by the Illuminate encrypter service and should be set
-    | to a random, 32 character string, otherwise these encrypted strings
-    | will not be safe. Please do this before deploying an application!
+    | This key is utilized by Laravel's encryption services and should be set
+    | to a random, 32 character string to ensure that all encrypted values
+    | are secure. You should do this prior to deploying the application.
     |
     */
 
+    'cipher' => 'AES-256-CBC',
+
     'key' => env('APP_KEY'),
 
-    'cipher' => 'AES-256-CBC',
+    'previous_keys' => [
+        ...array_filter(
+            explode(',', env('APP_PREVIOUS_KEYS', ''))
+        ),
+    ],
 
     /*
     |--------------------------------------------------------------------------