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),
 ];