diff --git a/.env.example b/.env.example
index b4cc4a0..4499f8a 100644
--- a/.env.example
+++ b/.env.example
@@ -4,6 +4,8 @@ APP_KEY=
 APP_DEBUG=true
 APP_URL=http://localhost
 
+APP_FORCE_HTTPS=false
+
 APP_DEMO_MODE=false
 APP_DEMO_EMAIL=
 APP_DEMO_PASSWORD=
diff --git a/app/Providers/AppServiceProvider.php b/app/Providers/AppServiceProvider.php
index cf4eb71..2294623 100644
--- a/app/Providers/AppServiceProvider.php
+++ b/app/Providers/AppServiceProvider.php
@@ -22,6 +22,7 @@ use App\Services\Search\Search;
 use Illuminate\Contracts\Foundation\Application;
 use Illuminate\Pagination\Paginator;
 use Illuminate\Support\Facades\Blade;
+use Illuminate\Support\Facades\URL;
 use Illuminate\Support\ServiceProvider;
 use Illuminate\Validation\Rules\Password;
 
@@ -70,6 +71,10 @@ final class AppServiceProvider extends ServiceProvider
             return Helpers::isDemoMode();
         });
 
+        if (config('app.force_https') === true) {
+            URL::forceScheme('https');
+        }
+
         Password::defaults(function () {
             $rule = Password::min(8);
 
diff --git a/config/app.php b/config/app.php
index 9fd6d96..6235015 100644
--- a/config/app.php
+++ b/config/app.php
@@ -70,6 +70,8 @@ return [
 
     'asset_url' => env('ASSET_URL'),
 
+    'force_https' => (bool) env('APP_FORCE_HTTPS', false),
+
     /*
     |--------------------------------------------------------------------------
     | Application Timezone
diff --git a/config/captcha.php b/config/captcha.php
index c06af38..dfe9069 100644
--- a/config/captcha.php
+++ b/config/captcha.php
@@ -1,10 +1,10 @@
 <?php
 
 return [
-    'waiting_for_captcha_verification_in_seconds' => env('WAITING_FOR_CAPTCHA_VERIFICATION_IN_SECONDS', 900),
-    'validate_max_count_errors' => env('CAPTCHA_VALIDATE_MAX_COUNT_ERRORS', 3),
-    'max_info_display_count' => env('CAPTCHA_MAX_INFO_DISPLAY_COUNT', 1),
-    'verification_data_view_limit_in_minutes' => env('CAPTCHA_VERIFICATION_DATA_VIEW_LIMIT_IN_MINUTES', 60),
+    'waiting_for_captcha_verification_in_seconds' => (int) env('WAITING_FOR_CAPTCHA_VERIFICATION_IN_SECONDS', 900),
+    'validate_max_count_errors' => (int) env('CAPTCHA_VALIDATE_MAX_COUNT_ERRORS', 3),
+    'max_info_display_count' => (int) env('CAPTCHA_MAX_INFO_DISPLAY_COUNT', 1),
+    'verification_data_view_limit_in_minutes' => (int) env('CAPTCHA_VERIFICATION_DATA_VIEW_LIMIT_IN_MINUTES', 60),
     'imageClass' => \App\Captcha\Images\Image::class,
     'types' => [
         'string' => [
diff --git a/config/rate_limiting.php b/config/rate_limiting.php
index b5fc841..1546686 100644
--- a/config/rate_limiting.php
+++ b/config/rate_limiting.php
@@ -3,6 +3,6 @@ return [
     /**
      * Max limit of the hour.
      */
-    'login_max_request' => env('LOGIN_MAX_REQUEST', 50),
-    'login_max_email_request' => env('LOGIN_MAX_EMAIL_REQUEST', 10),
+    'login_max_request' => (int) env('LOGIN_MAX_REQUEST', 50),
+    'login_max_email_request' => (int) env('LOGIN_MAX_EMAIL_REQUEST', 10),
 ];