diff --git a/.gitignore b/.gitignore
index cdd600d..8bb1338 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,5 @@
 build
 composer.lock
 vendor
-.idea/
\ No newline at end of file
+.idea/
+.phpunit.result.cache
diff --git a/.travis.yml b/.travis.yml
index 55f32dd..637494c 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -5,6 +5,7 @@ sudo: false
 php:
     - 7.2
     - 7.3
+    - 7.4
 
 cache:
   directories:
diff --git a/README.md b/README.md
index a50d308..e1294ea 100644
--- a/README.md
+++ b/README.md
@@ -11,7 +11,7 @@
 
 To install this package you will need:
 
- - Laravel >= 7.0
+ - Laravel 7.x
  - PHP 7.2+
 
 
@@ -25,7 +25,7 @@ or edit the `composer.json`
 
 ```
 "require": {
-    "linkstreet/laravel-sms": "^6.0"
+    "linkstreet/laravel-sms": "^5.1"
 }
 ```
 
diff --git a/src/Providers/SmsServiceProvider.php b/src/Providers/SmsServiceProvider.php
index deae8bc..124abd2 100644
--- a/src/Providers/SmsServiceProvider.php
+++ b/src/Providers/SmsServiceProvider.php
@@ -2,18 +2,12 @@
 
 namespace Linkstreet\LaravelSms\Providers;
 
+use Illuminate\Contracts\Support\DeferrableProvider;
 use Illuminate\Support\ServiceProvider;
 use Linkstreet\LaravelSms\SmsManager;
 
-class SmsServiceProvider extends ServiceProvider
+class SmsServiceProvider extends ServiceProvider implements DeferrableProvider
 {
-    /**
-     * Indicates if loading of the provider is deferred.
-     *
-     * @var bool
-     */
-    protected $defer = true;
-
     /**
      * Bootstrap the application services.
      *