diff --git a/src/config/laravel_google_translate.php b/src/config/laravel_google_translate.php
index 1985d15..95334c5 100644
--- a/src/config/laravel_google_translate.php
+++ b/src/config/laravel_google_translate.php
@@ -1,12 +1,12 @@
 <?php
 return [
-    'google_translate_api_key'=>null,
-    'yandex_translate_api_key'=>null,
-    'custom_api_translator' => null,
-    'custom_api_translator_key' => null,
+    'google_translate_api_key'=>env('GOOGLE_TRANSLATE_API_KEY', null),
+    'yandex_translate_api_key'=>env('YANDEX_TRANSLATE_API_KEY', null),
+    'custom_api_translator' => env('CUSTOM_API_TRANSLATOR', null),
+    'custom_api_translator_key' => env('CUSTOM_API_TRANSLATOR_KEY', null),
     'api_limit_settings'=>[
-        'no_requests_per_batch' => 5,
-        'sleep_time_between_batches' => 1
+        'no_requests_per_batch' => env('NO_REQUESTS_PER_BATCH', 5),
+        'sleep_time_between_batches' => env('SLEEP_TIME_BETWEEN_BATCHES', 1)
     ],
     'trans_functions' => [
         'trans',