diff --git a/README.md b/README.md
index 7cec9ef..e16d1bf 100644
--- a/README.md
+++ b/README.md
@@ -16,7 +16,7 @@ Feel free to check out the [releases](https://github.com/ARCANEDEV/Agent/release
 
 ### Features
 
-  * Laravel `5.1` to `5.7` are Supported.
+  * Laravel `5.1` to `5.8` are Supported.
   * Easy setup & configuration.
   * Well tested (100% code coverage with maximum code quality).
   * Made with :heart: & :coffee:.
@@ -41,7 +41,7 @@ If you discover any security related issues, please email arcanedev.maroc@gmail.
 - [All Contributors][link-contributors]
 
 [badge_license]:     https://img.shields.io/packagist/l/arcanedev/agent.svg?style=flat-square
-[badge_laravel]:     https://img.shields.io/badge/Laravel-5.1%20to%205.7-orange.svg?style=flat-square
+[badge_laravel]:     https://img.shields.io/badge/Laravel-5.1%20to%205.8-orange.svg?style=flat-square
 [badge_build]:       https://img.shields.io/travis/ARCANEDEV/Agent.svg?style=flat-square
 [badge_coverage]:    https://img.shields.io/scrutinizer/coverage/g/ARCANEDEV/Agent.svg?style=flat-square
 [badge_quality]:     https://img.shields.io/scrutinizer/g/ARCANEDEV/Agent.svg?style=flat-square
diff --git a/composer.json b/composer.json
index eee6948..4e978b2 100644
--- a/composer.json
+++ b/composer.json
@@ -14,14 +14,14 @@
     "type":    "library",
     "license": "MIT",
     "require": {
-        "php":                          ">=7.1.3",
-        "arcanedev/support":            "~4.4.0",
-        "mobiledetect/mobiledetectlib": "~2.8",
-        "jaybizzle/crawler-detect":     "~1.2"
+        "php":                          "^7.1.3",
+        "arcanedev/support":            "^4.5",
+        "mobiledetect/mobiledetectlib": "^2.8",
+        "jaybizzle/crawler-detect":     "^1.2"
     },
     "require-dev": {
-        "orchestra/testbench": "~3.7.0",
-        "phpunit/phpunit":     "^7.0"
+        "orchestra/testbench": "^3.8",
+        "phpunit/phpunit":     "^7.0|^8.0"
     },
     "autoload": {
         "psr-4": {
diff --git a/phpunit.xml.dist b/phpunit.xml.dist
index 716e447..6d4a0ac 100644
--- a/phpunit.xml.dist
+++ b/phpunit.xml.dist
@@ -8,7 +8,6 @@
          convertWarningsToExceptions="true"
          processIsolation="false"
          stopOnFailure="false"
-         syntaxCheck="false"
         >
     <testsuites>
         <testsuite name="Application Test Suite">
@@ -26,6 +25,6 @@
     <logging>
         <log type="coverage-clover" target="build/logs/clover.xml"/>
         <log type="coverage-text" target="build/logs/coverage.txt"/>
-        <log type="coverage-html" target="build/logs/coverage" charset="UTF-8" yui="true" highlight="true"/>
+        <log type="coverage-html" target="build/logs/coverage"/>
     </logging>
 </phpunit>
diff --git a/tests/AgentServiceProviderTest.php b/tests/AgentServiceProviderTest.php
index 44154c3..a136359 100644
--- a/tests/AgentServiceProviderTest.php
+++ b/tests/AgentServiceProviderTest.php
@@ -21,14 +21,14 @@ class AgentServiceProviderTest extends TestCase
      | -----------------------------------------------------------------
      */
 
-    public function setUp()
+    public function setUp(): void
     {
         parent::setUp();
 
         $this->provider = $this->app->getProvider(\Arcanedev\Agent\AgentServiceProvider::class);
     }
 
-    public function tearDown()
+    public function tearDown(): void
     {
         unset($this->provider);
 
@@ -40,7 +40,7 @@ public function tearDown()
      | ------------------------------------------------------------------------------------------------
      */
     /** @test */
-    public function it_can_be_instantiated()
+    public function it_can_be_instantiated(): void
     {
         $expectations = [
             \Illuminate\Support\ServiceProvider::class,
@@ -55,7 +55,7 @@ public function it_can_be_instantiated()
     }
 
     /** @test */
-    public function it_can_provides()
+    public function it_can_provides(): void
     {
         $expected = [
             \Arcanedev\Agent\Contracts\Agent::class,
diff --git a/tests/AgentTest.php b/tests/AgentTest.php
index 3908ddd..94661c8 100644
--- a/tests/AgentTest.php
+++ b/tests/AgentTest.php
@@ -21,14 +21,14 @@ class AgentTest extends TestCase
      | -----------------------------------------------------------------
      */
 
-    public function setUp()
+    public function setUp(): void
     {
         parent::setUp();
 
         $this->agent = $this->app->make(\Arcanedev\Agent\Contracts\Agent::class);
     }
 
-    public function tearDown()
+    public function tearDown(): void
     {
         unset($this->agent);
 
@@ -41,7 +41,7 @@ public function tearDown()
      */
 
     /** @test */
-    public function it_can_be_instantiated()
+    public function it_can_be_instantiated(): void
     {
         $expectations = [
             \Arcanedev\Agent\Contracts\Agent::class,
@@ -54,7 +54,7 @@ public function it_can_be_instantiated()
     }
 
     /** @test */
-    public function it_can_get_languages()
+    public function it_can_get_languages(): void
     {
         $this->agent->setHttpHeaders([
             'HTTP_ACCEPT_LANGUAGE' => 'nl-NL,nl;q=0.8,en-US;q=0.6,en;q=0.4',
@@ -64,7 +64,7 @@ public function it_can_get_languages()
     }
 
     /** @test */
-    public function it_can_get_languages_sorted()
+    public function it_can_get_languages_sorted(): void
     {
         $this->agent->setHttpHeaders([
             'HTTP_ACCEPT_LANGUAGE' => 'en;q=0.4,en-US,nl;q=0.6',
@@ -81,7 +81,7 @@ public function it_can_get_languages_sorted()
      * @param  string  $ua
      * @param  string  $browser
      */
-    public function it_can_check_browsers($ua, $browser)
+    public function it_can_check_browsers($ua, $browser): void
     {
         $this->agent->setUserAgent($ua);
 
@@ -95,7 +95,7 @@ public function it_can_check_browsers($ua, $browser)
     }
 
     /** @test */
-    public function it_can_get_browser_version()
+    public function it_can_get_browser_version(): void
     {
         foreach($this->browserVersions as $ua => $version) {
             $this->agent->setUserAgent($ua);
@@ -114,7 +114,7 @@ public function it_can_get_browser_version()
      * @param  string  $ua
      * @param  string  $platform
      */
-    public function it_can_check_operating_systems($ua, $platform)
+    public function it_can_check_operating_systems($ua, $platform): void
     {
         $this->agent->setUserAgent($ua);
         static::assertEquals($platform, $this->agent->platform(), $ua);
@@ -127,7 +127,7 @@ public function it_can_check_operating_systems($ua, $platform)
     }
 
     /** @test */
-    public function it_can_get_os_version()
+    public function it_can_get_os_version(): void
     {
         foreach($this->operatingSystemVersions as $ua => $version) {
             $this->agent->setUserAgent($ua);
@@ -139,7 +139,7 @@ public function it_can_get_os_version()
     }
 
     /** @test */
-    public function it_can_check_is_desktop()
+    public function it_can_check_is_desktop(): void
     {
         foreach($this->desktops as $ua) {
             $this->agent->setUserAgent($ua);
@@ -154,7 +154,7 @@ public function it_can_check_is_desktop()
     }
 
     /** @test */
-    public function it_can_check_is_phone()
+    public function it_can_check_is_phone(): void
     {
         foreach($this->phones as $ua) {
             $this->agent->setUserAgent($ua);
@@ -175,7 +175,7 @@ public function it_can_check_is_phone()
      * @param  string  $ua
      * @param  string  $robot
      */
-    public function it_can_check_is_robot($ua, $robot)
+    public function it_can_check_is_robot($ua, $robot): void
     {
         $this->agent->setUserAgent($ua);
 
@@ -189,7 +189,7 @@ public function it_can_check_is_robot($ua, $robot)
     }
 
     /** @test */
-    public function it_can_check_is_mobile_device()
+    public function it_can_check_is_mobile_device(): void
     {
         foreach($this->mobileDevices as $ua => $device) {
             $this->agent->setUserAgent($ua);
@@ -208,7 +208,7 @@ public function it_can_check_is_mobile_device()
     }
 
     /** @test */
-    public function it_can_check_is_desktop_device()
+    public function it_can_check_is_desktop_device(): void
     {
         foreach($this->desktopDevices as $ua => $device) {
             $this->agent->setUserAgent($ua);
@@ -228,14 +228,12 @@ public function it_can_check_is_desktop_device()
         }
     }
 
-    /**
-     * @test
-     *
-     * @expectedException         \BadMethodCallException
-     * @expectedExceptionMessage  No such method exists: canUseIE
-     */
-    public function it_must_throw_exception_on_invalid_method_name()
+    /** @test */
+    public function it_must_throw_exception_on_invalid_method_name(): void
     {
+        $this->expectException(\BadMethodCallException::class);
+        $this->expectExceptionMessage('No such method exists: canUseIE');
+
         $this->agent->canUseIE();
     }