diff --git a/app/Http/Controllers/App/Maintenance.php b/app/Http/Controllers/App/Maintenance.php
index 44b28421..ecbc6c4a 100644
--- a/app/Http/Controllers/App/Maintenance.php
+++ b/app/Http/Controllers/App/Maintenance.php
@@ -3,17 +3,34 @@
 namespace App\Http\Controllers\App;
 
 use App\Http\Controllers\Controller;
+use App\Models\Language;
+use App\Models\LanguageTranslation;
+use App\Services\LanguageService;
 use Artisan;
+use DB;
+use Gate;
+use Illuminate\Contracts\Foundation\Application;
+use Illuminate\Contracts\Routing\ResponseFactory;
 use Illuminate\Http\Request;
+use Illuminate\Http\Response;
 use Schema;
 
 class Maintenance extends Controller
 {
+    /**
+     * @throws \Illuminate\Auth\Access\AuthorizationException
+     */
+    public function __construct()
+    {
+        // Check admin permission
+        Gate::authorize('maintenance');
+    }
 
     /**
      *  Start maintenance mode
      */
-    public function up() {
+    public function up()
+    {
         $command = Artisan::call('up');
 
         if ($command === 0) {
@@ -24,7 +41,8 @@ class Maintenance extends Controller
     /**
      *  End maintenance mode
      */
-    public function down() {
+    public function down()
+    {
         $command = Artisan::call('down');
 
         if ($command === 0) {
@@ -33,17 +51,23 @@ class Maintenance extends Controller
     }
 
     /**
-     *  Upgrade database
+     * Get new language translations from default translations
+     * and insert it into database
+     *
+     * @return Application|ResponseFactory|Response
      */
-    public function upgrade()
+    public function upgrade_translations()
     {
-        $this->upgrade_database();
+        resolve(LanguageService::class)
+            ->upgrade_language_translations();
+
+        return response('Done.', 201);
     }
 
     /**
      * @return int|mixed
      */
-    private function upgrade_database()
+    public function upgrade_database()
     {
         $command = Artisan::call('migrate', [
             '--force' => true
diff --git a/app/Models/Language.php b/app/Models/Language.php
index ade8035b..daf50ef3 100644
--- a/app/Models/Language.php
+++ b/app/Models/Language.php
@@ -2,7 +2,7 @@
 
 namespace App\Models;
 
-use App\Services\HelperService;
+use App\Services\LanguageService;
 use Illuminate\Support\Str;
 use Illuminate\Support\Facades\DB;
 use Illuminate\Database\Eloquent\Model;
@@ -41,7 +41,7 @@ class Language extends Model
         static::creating(function ($language) {
             $language->id = Str::uuid();
 
-            resolve(HelperService::class)
+            resolve(LanguageService::class)
                 ->create_default_language_translations(
                     get_setting('license') ?? 'extended', $language->locale
                 );
diff --git a/app/Models/LanguageTranslation.php b/app/Models/LanguageTranslation.php
index c6fe28b4..bb7b7a67 100644
--- a/app/Models/LanguageTranslation.php
+++ b/app/Models/LanguageTranslation.php
@@ -4,6 +4,9 @@ namespace App\Models;
 
 use Illuminate\Database\Eloquent\Model;
 
+/**
+ * @method static whereLang(string $string)
+ */
 class LanguageTranslation extends Model
 {
     public $timestamps = false;
diff --git a/app/Providers/AuthServiceProvider.php b/app/Providers/AuthServiceProvider.php
index 11bcf1d6..2a547782 100644
--- a/app/Providers/AuthServiceProvider.php
+++ b/app/Providers/AuthServiceProvider.php
@@ -26,8 +26,8 @@ class AuthServiceProvider extends ServiceProvider
     {
         $this->registerPolicies();
 
-        // Define admin settings gate
-        Gate::define('admin-settings', function ($user) {
+        // Define admin maintenance gate
+        Gate::define('maintenance', function ($user) {
             return $user->role === 'admin';
         });
     }
diff --git a/app/Services/HelperService.php b/app/Services/HelperService.php
index cbfac7e8..6ca24d30 100644
--- a/app/Services/HelperService.php
+++ b/app/Services/HelperService.php
@@ -8,7 +8,6 @@ use App\Models\Share;
 use Aws\Exception\MultipartUploadException;
 use Aws\S3\MultipartUploader;
 use DB;
-use Illuminate\Http\Request;
 use Illuminate\Support\Arr;
 use Illuminate\Support\Facades\Log;
 use Illuminate\Support\Facades\Storage;
@@ -323,35 +322,4 @@ class HelperService
             }
         }
     }
-
-    /**
-     * @param $license
-     * @param $locale
-     */
-    function create_default_language_translations($license, $locale)
-    {
-        $translations = [
-            'extended' => collect([
-                config("language-translations.extended"),
-                config("language-translations.regular"),
-                config("custom-language-translations")
-            ])->collapse(),
-            'regular'  => collect([
-                config("language-translations.regular"),
-                config("custom-language-translations")
-            ])->collapse(),
-        ];
-
-        $translations = $translations[strtolower($license)]
-            ->map(function ($value, $key) use ($locale) {
-                return [
-                    'lang'  => $locale,
-                    'value' => $value,
-                    'key'   => $key,
-                ];
-            })->toArray();
-
-        DB::table('language_translations')
-            ->insert($translations);
-    }
 }
\ No newline at end of file
diff --git a/app/Services/LanguageService.php b/app/Services/LanguageService.php
new file mode 100644
index 00000000..2bf192ff
--- /dev/null
+++ b/app/Services/LanguageService.php
@@ -0,0 +1,93 @@
+<?php
+
+
+namespace App\Services;
+
+
+use App\Models\Language;
+use App\Models\LanguageTranslation;
+use DB;
+
+class LanguageService
+{
+    /**
+     * @param $license
+     * @param $locale
+     */
+    function create_default_language_translations($license, $locale)
+    {
+        $translations = [
+            'extended' => collect([
+                config("language-translations.extended"),
+                config("language-translations.regular"),
+                config("custom-language-translations")
+            ])->collapse(),
+            'regular'  => collect([
+                config("language-translations.regular"),
+                config("custom-language-translations")
+            ])->collapse(),
+        ];
+
+        $translations = $translations[strtolower($license)]
+            ->map(function ($value, $key) use ($locale) {
+                return [
+                    'lang'  => $locale,
+                    'value' => $value,
+                    'key'   => $key,
+                ];
+            })->toArray();
+
+        DB::table('language_translations')
+            ->insert($translations);
+    }
+
+    /**
+     * Find newly added translations in default language
+     * translations file and insert it into database
+     */
+    function upgrade_language_translations()
+    {
+        // Get all app locales
+        $locales = Language::all()
+            ->pluck('locale');
+
+        // Get default translations
+        $translations = LanguageTranslation::whereLang('en')
+            ->get();
+
+        $default_translations = [
+            'extended' => collect([
+                config("language-translations.extended"),
+                config("language-translations.regular"),
+                config("custom-language-translations")
+            ])->collapse(),
+            'regular'  => collect([
+                config("language-translations.regular"),
+                config("custom-language-translations")
+            ])->collapse(),
+        ];
+
+        $license = strtolower(get_setting('license'));
+
+        // Find new translations in default translations
+        $newbies = $default_translations[$license]
+            ->diff(map_language_translations($translations));
+
+        // Store new translations for every language
+        $locales->each(function ($locale) use ($newbies) {
+
+            $translations = $newbies
+                ->map(function ($value, $key) use ($locale) {
+                    return [
+                        'lang'  => $locale,
+                        'value' => $value,
+                        'key'   => $key,
+                    ];
+                })->toArray();
+
+            // Store translations into database
+            DB::table('language_translations')
+                ->insert($translations);
+        });
+    }
+}
\ No newline at end of file
diff --git a/public/mix-manifest.json b/public/mix-manifest.json
index e445b0e6..91ce28ab 100644
--- a/public/mix-manifest.json
+++ b/public/mix-manifest.json
@@ -17,7 +17,7 @@
     "/chunks/app-email.js": "/chunks/app-email.js?id=c578a85112c6a4b1ed0e",
     "/chunks/app-index.js": "/chunks/app-index.js?id=7f07dceace5c9c8255bb",
     "/chunks/app-language.js": "/chunks/app-language.js?id=e97b8b4e0a0f5ac93c97",
-    "/chunks/app-language~chunks/dashboard~chunks/files~chunks/invoices~chunks/pages~chunks/plans~chunks/s~38c276fc.js": "/chunks/app-language~chunks/dashboard~chunks/files~chunks/invoices~chunks/pages~chunks/plans~chunks/s~38c276fc.js?id=91d6a4649c9277a7bb29",
+    "/chunks/app-language~chunks/dashboard~chunks/files~chunks/invoices~chunks/pages~chunks/plans~chunks/s~38c276fc.js": "/chunks/app-language~chunks/dashboard~chunks/files~chunks/invoices~chunks/pages~chunks/plans~chunks/s~38c276fc.js?id=e4abf38870f961cb6979",
     "/chunks/app-others.js": "/chunks/app-others.js?id=9156adba3b1697a8bf3e",
     "/chunks/app-payments.js": "/chunks/app-payments.js?id=7e1a982c90174f568fb2",
     "/chunks/app-settings.js": "/chunks/app-settings.js?id=bbf2a2e436d939f7fc07",
@@ -59,7 +59,7 @@
     "/chunks/profile~chunks/settings-password.js": "/chunks/profile~chunks/settings-password.js?id=d448806bfefc6cc43f0d",
     "/chunks/purchase-code.js": "/chunks/purchase-code.js?id=e00ee12cde704060e15b",
     "/chunks/settings.js": "/chunks/settings.js?id=2637c005a9c8b01cfc9b",
-    "/chunks/settings-create-payment-methods.js": "/chunks/settings-create-payment-methods.js?id=c12436dc2933527ce1f5",
+    "/chunks/settings-create-payment-methods.js": "/chunks/settings-create-payment-methods.js?id=88849e6ddce9226d49a5",
     "/chunks/settings-invoices.js": "/chunks/settings-invoices.js?id=444b9bbc310647ddd297",
     "/chunks/settings-password.js": "/chunks/settings-password.js?id=d24053a92c2594439d04",
     "/chunks/settings-payment-methods.js": "/chunks/settings-payment-methods.js?id=3bc709a228c0849a6f62",
@@ -76,7 +76,7 @@
     "/chunks/stripe-credentials.js": "/chunks/stripe-credentials.js?id=1acdec3a157c8943a88d",
     "/chunks/subscription-plans.js": "/chunks/subscription-plans.js?id=a843f8cf90ff1e3168e8",
     "/chunks/subscription-service.js": "/chunks/subscription-service.js?id=90c1aa9431689a89eb3d",
-    "/chunks/upgrade-billing.js": "/chunks/upgrade-billing.js?id=d76e4522f424ce996e8f",
+    "/chunks/upgrade-billing.js": "/chunks/upgrade-billing.js?id=b06efc03a40bcba2bdad",
     "/chunks/upgrade-billing~chunks/upgrade-plan.js": "/chunks/upgrade-billing~chunks/upgrade-plan.js?id=e1658ebec711765f67fc",
     "/chunks/upgrade-plan.js": "/chunks/upgrade-plan.js?id=35179531a8241da128e9",
     "/chunks/user.js": "/chunks/user.js?id=6e9af0d22327a4cc82e9",
@@ -90,46 +90,5 @@
     "/chunks/users.js": "/chunks/users.js?id=f1057be5cf73ebc32c14",
     "/vendors~chunks/admin~chunks/admin-account~chunks/app-appearance~chunks/app-billings~chunks/app-email~0d496e20.js": "/vendors~chunks/admin~chunks/admin-account~chunks/app-appearance~chunks/app-billings~chunks/app-email~0d496e20.js?id=a9facd8e57a0dd054f8c",
     "/vendors~chunks/admin~chunks/admin-account~chunks/app-appearance~chunks/app-billings~chunks/app-email~7afe9e20.js": "/vendors~chunks/admin~chunks/admin-account~chunks/app-appearance~chunks/app-billings~chunks/app-email~7afe9e20.js?id=6d6e7e4191c9e2705c8a",
-    "/vendors~chunks/files~chunks/platform~chunks/shared~chunks/shared-files~chunks/shared/file-browser~ch~52c14f2e.js": "/vendors~chunks/files~chunks/platform~chunks/shared~chunks/shared-files~chunks/shared/file-browser~ch~52c14f2e.js?id=66afa0e341251a68c3d3",
-    "/chunks/app-language.5e86b6c8aedb968aabd1.hot-update.js": "/chunks/app-language.5e86b6c8aedb968aabd1.hot-update.js",
-    "/chunks/app-language.3e137679fcd212ecdb43.hot-update.js": "/chunks/app-language.3e137679fcd212ecdb43.hot-update.js",
-    "/chunks/app-language.8069ae5a36cc4868d1d3.hot-update.js": "/chunks/app-language.8069ae5a36cc4868d1d3.hot-update.js",
-    "/chunks/app-language.d4c9d87012f92cbb3694.hot-update.js": "/chunks/app-language.d4c9d87012f92cbb3694.hot-update.js",
-    "/chunks/app-language.c0acc236afe078713927.hot-update.js": "/chunks/app-language.c0acc236afe078713927.hot-update.js",
-    "/chunks/app-language.42b3b09042f97ffb073a.hot-update.js": "/chunks/app-language.42b3b09042f97ffb073a.hot-update.js",
-    "/chunks/app-language.7478a2ac686bc8208aac.hot-update.js": "/chunks/app-language.7478a2ac686bc8208aac.hot-update.js",
-    "/chunks/app-language.695a92293d8dc92d833b.hot-update.js": "/chunks/app-language.695a92293d8dc92d833b.hot-update.js",
-    "/chunks/app-language.25fa944544b002f36615.hot-update.js": "/chunks/app-language.25fa944544b002f36615.hot-update.js",
-    "/chunks/app-language.aee54dee7bdbae4a4dad.hot-update.js": "/chunks/app-language.aee54dee7bdbae4a4dad.hot-update.js",
-    "/chunks/app-language.62fa61e8408e9fd42b23.hot-update.js": "/chunks/app-language.62fa61e8408e9fd42b23.hot-update.js",
-    "/js/main.21d047cff85c2cc93f65.hot-update.js": "/js/main.21d047cff85c2cc93f65.hot-update.js",
-    "/chunks/app-language.13a02b269488a9ed8054.hot-update.js": "/chunks/app-language.13a02b269488a9ed8054.hot-update.js",
-    "/chunks/app-language.ff6a3c1bce44294e69aa.hot-update.js": "/chunks/app-language.ff6a3c1bce44294e69aa.hot-update.js",
-    "/chunks/app-language.0aff16e91050419f056f.hot-update.js": "/chunks/app-language.0aff16e91050419f056f.hot-update.js",
-    "/chunks/admin.00d9afd473b8b4521765.hot-update.js": "/chunks/admin.00d9afd473b8b4521765.hot-update.js",
-    "/chunks/admin.b85158f2cba3bfbbf404.hot-update.js": "/chunks/admin.b85158f2cba3bfbbf404.hot-update.js",
-    "/chunks/admin.bf53021a67ae75f1b0ee.hot-update.js": "/chunks/admin.bf53021a67ae75f1b0ee.hot-update.js",
-    "/chunks/admin.bda5e8845d2e437ffe7c.hot-update.js": "/chunks/admin.bda5e8845d2e437ffe7c.hot-update.js",
-    "/chunks/admin.a97d84e1d8754867cef5.hot-update.js": "/chunks/admin.a97d84e1d8754867cef5.hot-update.js",
-    "/chunks/app-language.8ca3efeede3cedbd37e0.hot-update.js": "/chunks/app-language.8ca3efeede3cedbd37e0.hot-update.js",
-    "/chunks/app-language.23f838b7be45ce10476b.hot-update.js": "/chunks/app-language.23f838b7be45ce10476b.hot-update.js",
-    "/chunks/app-language.fd910667c3258a91322b.hot-update.js": "/chunks/app-language.fd910667c3258a91322b.hot-update.js",
-    "/chunks/app-language.6a163294803727b4d501.hot-update.js": "/chunks/app-language.6a163294803727b4d501.hot-update.js",
-    "/chunks/platform.085176bd0065608cb370.hot-update.js": "/chunks/platform.085176bd0065608cb370.hot-update.js",
-    "/chunks/dashboard.f475c4f86956a8e5419b.hot-update.js": "/chunks/dashboard.f475c4f86956a8e5419b.hot-update.js",
-    "/chunks/app-language.1dd1423a8af00cb8c9bd.hot-update.js": "/chunks/app-language.1dd1423a8af00cb8c9bd.hot-update.js",
-    "/chunks/app-language.040639168a8e73d40dec.hot-update.js": "/chunks/app-language.040639168a8e73d40dec.hot-update.js",
-    "/chunks/app-language.72377b182d4f8ae86208.hot-update.js": "/chunks/app-language.72377b182d4f8ae86208.hot-update.js",
-    "/chunks/app-language.d82931f09bfdd6dbc955.hot-update.js": "/chunks/app-language.d82931f09bfdd6dbc955.hot-update.js",
-    "/chunks/app-language.2193825771658065f586.hot-update.js": "/chunks/app-language.2193825771658065f586.hot-update.js",
-    "/chunks/app-language.cab91ceba0b383f64680.hot-update.js": "/chunks/app-language.cab91ceba0b383f64680.hot-update.js",
-    "/chunks/app-language.a42ea53577d7e0f0a5fb.hot-update.js": "/chunks/app-language.a42ea53577d7e0f0a5fb.hot-update.js",
-    "/chunks/app-language.09d631da1a2172e96bce.hot-update.js": "/chunks/app-language.09d631da1a2172e96bce.hot-update.js",
-    "/chunks/app-appearance.690e1a1f6d721bca8cdf.hot-update.js": "/chunks/app-appearance.690e1a1f6d721bca8cdf.hot-update.js",
-    "/chunks/contact-us~chunks/dynamic-page~chunks/homepage.51e62febff164672078a.hot-update.js": "/chunks/contact-us~chunks/dynamic-page~chunks/homepage.51e62febff164672078a.hot-update.js",
-    "/chunks/app-language.439fa6fafc54298cdf2b.hot-update.js": "/chunks/app-language.439fa6fafc54298cdf2b.hot-update.js",
-    "/chunks/app-language.9ee4a795d26a6e44820c.hot-update.js": "/chunks/app-language.9ee4a795d26a6e44820c.hot-update.js",
-    "/js/main.8517a680822ffe9748c9.hot-update.js": "/js/main.8517a680822ffe9748c9.hot-update.js",
-    "/chunks/admin.9396f79fef53ad7070fe.hot-update.js": "/chunks/admin.9396f79fef53ad7070fe.hot-update.js",
-    "/chunks/platform.9396f79fef53ad7070fe.hot-update.js": "/chunks/platform.9396f79fef53ad7070fe.hot-update.js"
+    "/vendors~chunks/files~chunks/platform~chunks/shared~chunks/shared-files~chunks/shared/file-browser~ch~52c14f2e.js": "/vendors~chunks/files~chunks/platform~chunks/shared~chunks/shared-files~chunks/shared/file-browser~ch~52c14f2e.js?id=66afa0e341251a68c3d3"
 }
diff --git a/routes/maintenance.php b/routes/maintenance.php
index d4d477e5..5365d07c 100644
--- a/routes/maintenance.php
+++ b/routes/maintenance.php
@@ -2,6 +2,14 @@
 
 use App\Http\Controllers\App\Maintenance;
 
-Route::post('/upgrade', [Maintenance::class, 'upgrade']);
-Route::get('/down', [Maintenance::class, 'down']);
-Route::get('/up', [Maintenance::class, 'up']);
\ No newline at end of file
+Route::group(['middleware' => ['auth:sanctum']], function () {
+
+    Route::get('/down', [Maintenance::class, 'down']);
+    Route::get('/up', [Maintenance::class, 'up']);
+
+    Route::group(['prefix' => 'upgrade'], function () {
+        Route::get('/translations', [Maintenance::class, 'upgrade_translations']);
+        Route::get('/database', [Maintenance::class, 'upgrade_database']);
+    });
+});
+
diff --git a/tests/Feature/App/AppUpgradeTest.php b/tests/Feature/App/AppUpgradeTest.php
new file mode 100644
index 00000000..385d7217
--- /dev/null
+++ b/tests/Feature/App/AppUpgradeTest.php
@@ -0,0 +1,86 @@
+<?php
+
+namespace Tests\Feature\App;
+
+use App\Models\Setting;
+use App\Models\User;
+use App\Services\SetupService;
+use DB;
+use Illuminate\Foundation\Testing\DatabaseMigrations;
+use Illuminate\Support\Str;
+use Laravel\Sanctum\Sanctum;
+use Tests\TestCase;
+
+class AppUpgradeTest extends TestCase
+{
+    use DatabaseMigrations;
+
+    public function __construct()
+    {
+        parent::__construct();
+        $this->setup = app()->make(SetupService::class);
+    }
+
+    /**
+     * @test
+     */
+    public function it_upgrade_default_language_translations()
+    {
+        $this->setup->seed_default_settings('Extended');
+
+        Setting::create([
+            'name'  => 'setup_wizard_success',
+            'value' => 'setup-done',
+        ]);
+
+        Setting::create([
+            'name'  => 'license',
+            'value' => 'Extended',
+        ]);
+
+        collect(['en', 'sk'])
+            ->map(function ($locale) {
+
+                DB::table('languages')->insert([
+                    'id'     => Str::uuid(),
+                    'name'   => 'English',
+                    'locale' => $locale
+                ]);
+
+                DB::table('language_translations')->insert([
+                    [
+                        'key'   => 'activation.stripe.button',
+                        'value' => 'Set up your Stripe account',
+                        'lang'  => $locale
+                    ], [
+                        'key'   => 'activation.stripe.description',
+                        'value' => 'To charge your users, please set up your Stripe account credentials.',
+                        'lang'  => $locale
+                    ]
+                ]);
+            });
+
+        Setting::create([
+            'name'  => 'language',
+            'value' => 'en',
+        ]);
+
+        $user = User::factory(User::class)
+            ->create(['role' => 'admin']);
+
+        Sanctum::actingAs($user);
+
+        $this->get('/upgrade/translations')
+            ->assertStatus(201);
+
+        collect(['en', 'sk'])
+            ->map(function ($locale) {
+
+                $this->assertDatabaseHas('language_translations', [
+                    'key' => 'activation.stripe.title',
+                    'value' => 'Your Stripe account is not set',
+                    'lang' => $locale,
+                ]);
+            });
+    }
+}