diff --git a/.travis.yml b/.travis.yml
index 3cf389d..6667310 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,8 +1,9 @@
 language: php
 
 php:
-  - 7.1
   - 7.2
+  - 7.3
+  - 7.4
 
 before_script: composer install
 
diff --git a/composer.json b/composer.json
index 9075fe7..5dbb6b4 100644
--- a/composer.json
+++ b/composer.json
@@ -11,18 +11,18 @@
     ],
     "minimum-stability": "stable",
     "require": {
-        "php": ">=7.1",
+        "php": ">=7.2",
         "guzzlehttp/guzzle": "^6.2",
-        "illuminate/http": "^5.4",
-        "illuminate/support": "^5.4",
-        "nesbot/carbon": "^1.22 || ^2.0",
+        "illuminate/http": "^6.0",
+        "illuminate/support": "^6.0",
+        "nesbot/carbon": "^2.0",
         "ramsey/uuid": "^3.6"
     },
     "require-dev": {
-        "jshayes/fake-requests": "^2.0",
-        "mockery/mockery": "^0.9.9",
-        "orchestra/testbench": "^3.4",
-        "phpunit/phpunit": "^6.0",
+        "jshayes/fake-requests": "^3.0",
+        "mockery/mockery": "^1.0",
+        "orchestra/testbench": "^4.0",
+        "phpunit/phpunit": "^8.0",
         "satooshi/php-coveralls": "^1.0"
     },
     "autoload": {
diff --git a/tests/ClientTest.php b/tests/ClientTest.php
index 71c4741..294750d 100644
--- a/tests/ClientTest.php
+++ b/tests/ClientTest.php
@@ -57,7 +57,7 @@ public function fromInteger($integer)
         });
     }
 
-    protected function setUp()
+    protected function setUp(): void
     {
         parent::setUp();
 
diff --git a/tests/ServiceProviderTest.php b/tests/ServiceProviderTest.php
index e02f893..2df423f 100644
--- a/tests/ServiceProviderTest.php
+++ b/tests/ServiceProviderTest.php
@@ -2,6 +2,7 @@
 
 namespace Tests;
 
+use Illuminate\Support\Str;
 use Orchestra\Testbench\TestCase as Base;
 use SoapBox\SignedRequests\ServiceProvider;
 
@@ -20,8 +21,8 @@ public function it_publishes_configurations_when_it_is_booted()
         $this->assertNotEmpty($publishes);
 
         foreach ($publishes as $key => $value) {
-            $this->assertTrue(ends_with($key, 'signed-requests.php'));
-            $this->assertTrue(ends_with($value, 'signed-requests.php'));
+            $this->assertTrue(Str::endsWith($key, 'signed-requests.php'));
+            $this->assertTrue(Str::endsWith($value, 'signed-requests.php'));
         }
     }
 }
diff --git a/tests/TestCase.php b/tests/TestCase.php
index ebd0ab0..a461d92 100644
--- a/tests/TestCase.php
+++ b/tests/TestCase.php
@@ -7,15 +7,6 @@
 
 abstract class TestCase extends Base
 {
-    /**
-     * @before
-     */
-    protected function setUpMockery()
-    {
-        Mockery::getConfiguration()->allowMockingNonExistentMethods(false);
-        Mockery::getConfiguration()->allowMockingMethodsUnnecessarily(false);
-    }
-
     /**
      * @after
      */