diff --git a/.gitattributes b/.gitattributes
index 9960195..3eb38bd 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -1,5 +1,5 @@
+/.github            export-ignore
 /tests              export-ignore
 /.gitattributes     export-ignore
 /.gitignore         export-ignore
-/.travis.yml        export-ignore
 /phpunit.xml        export-ignore
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
new file mode 100644
index 0000000..4b46627
--- /dev/null
+++ b/.github/workflows/tests.yml
@@ -0,0 +1,38 @@
+name: tests
+
+on:
+  push:
+  pull_request:
+
+jobs:
+  test:
+
+    runs-on: ubuntu-latest
+    timeout-minutes: 15
+    strategy:
+      fail-fast: false
+      matrix:
+        php: [7.4, 8.0]
+        composer-flag: [prefer-lowest, prefer-stable]
+
+    name: php v${{ matrix.php }} - ${{ matrix.composer-flag }}
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v2
+
+      - name: Setup PHP
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: ${{ matrix.php }}
+          extensions: dom, curl, libxml, mbstring, zip, pdo, bcmath, gmp
+          tools: composer:v2
+
+      - name: Install dependencies
+        run: composer update --${{ matrix.composer-flag }} --no-interaction --no-progress
+
+      - name: Execute tests
+        run: |
+          mkdir -p build/logs
+          composer test -- --coverage-clover build/logs/clover.xml
+          [ -f build/logs/clover.xml ] && ./vendor/bin/php-coveralls -v || echo 'clover.xml not found.'
diff --git a/.gitignore b/.gitignore
index 8b7ef35..c626c17 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,4 @@
 /vendor
+/build/
 composer.lock
+/.phpunit.result.cache
diff --git a/.travis.yml b/.travis.yml
deleted file mode 100644
index b82059d..0000000
--- a/.travis.yml
+++ /dev/null
@@ -1,20 +0,0 @@
-language: php
-
-php:
-  - 7.0
-  - 7.1
-  - 7.2
-  - 7.3
-
-sudo: false
-
-before_script:
-  - travis_retry composer self-update
-  - travis_retry composer install --no-interaction
-
-script:
-  - mkdir -p build/logs
-  - ./vendor/bin/phpunit --coverage-clover build/logs/clover.xml
-
-after_success:
-  - php vendor/bin/coveralls -v
diff --git a/LICENSE.md b/LICENSE.md
index 948b1b1..2bca0d4 100644
--- a/LICENSE.md
+++ b/LICENSE.md
@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 2020 Jens Segers
+Copyright (c) 2021 Jens Segers
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/README.md b/README.md
index 7529621..b7f4357 100644
--- a/README.md
+++ b/README.md
@@ -1,8 +1,9 @@
-Optimus id transformation
-=========================
-
-[![Latest Stable Version](http://img.shields.io/github/release/jenssegers/optimus.svg)](https://packagist.org/packages/jenssegers/optimus) [![Build Status](http://img.shields.io/travis/jenssegers/optimus.svg)](https://travis-ci.org/jenssegers/optimus) [![Coverage Status](http://img.shields.io/coveralls/jenssegers/optimus.svg)](https://coveralls.io/r/jenssegers/optimus?branch=master)
+# Optimus id transformation
 
+[![Packagist](https://badgen.net/packagist/v/jenssegers/optimus)](https://packagist.org/packages/jenssegers/optimus)
+[![Downloads](https://badgen.net/packagist/dt/jenssegers/optimus)](https://packagist.org/packages/jenssegers/optimus/stats)
+[![Build](https://github.com/jenssegers/optimus/workflows/tests/badge.svg)](https://github.com/jenssegers/optimus/actions) 
+[![Coverage](http://img.shields.io/coveralls/jenssegers/optimus.svg)](https://coveralls.io/r/jenssegers/optimus?branch=master)
 
 With this library, you can transform your internal id's to obfuscated integers based on Knuth's integer hash. It is similar to Hashids, but will generate integers instead of random strings. It is also super fast.
 
@@ -10,25 +11,26 @@ With this library, you can transform your internal id's to obfuscated integers b
 <img src="https://jenssegers.com/static/media/optimus.png">
 </p>
 
-Installation
-------------
+## Installation
 
 Install using composer:
 
-```
+```bash
 composer require jenssegers/optimus
 ```
 
-If you will be running your code on a 32 bit system or will be working with large prime numbers it is suggested that you install the [GMP extension](http://php.net/manual/en/book.gmp.php). For debian/ubuntu you can install the extension with one of these commands:
+If you will be running your code on a 32 bit system or will be working with large prime numbers it is suggested that you install the [GMP extension](http://php.net/manual/en/book.gmp.php). 
+For debian/ubuntu you can install the extension with one of these commands:
 
-```
+```bash
 apt-get install php7.0-gmp
 apt-get install php7.1-gmp
 apt-get install php7.2-gmp
+apt-get install php7.3-gmp
+apt-get install php7.4-gmp
 ```
 
-Usage
------
+## Usage
 
 To get started you will need 3 things;
 
@@ -38,7 +40,7 @@ To get started you will need 3 things;
 
 Luckily for you, I have included a console command that can do all of this for you. To get started, just run the following command:
 
-```
+```bash
 > php vendor/bin/optimus spark
 
 Prime: 2123809381
@@ -48,7 +50,7 @@ Random: 146808189
 
 If you prefer to choose your own prime number (from [this list](http://primes.utm.edu/lists/small/millions/) for example), you can pass it to the command to calculate the remaining numbers:
 
-```
+```bash
 > php vendor/bin/optimus spark 1580030173
 
 Prime: 1580030173
@@ -135,16 +137,16 @@ More information: https://laravel.com/docs/5.3/container#resolving
 
 **Third-party integrations**
 
-An integration with Laravel is provided by the [propaganistas/laravel-fakeid](https://packagist.org/packages/propaganistas/laravel-fakeid) package.
-
-Laravel Optimus with multiple connections provided by the [cybercog/laravel-optimus](https://github.com/cybercog/laravel-optimus) package.
-
-An integration with Silex 2 is provided by the [jaam/silex-optimus-provider](https://packagist.org/packages/jaam/silex-optimus-provider) package.
-
-An integration with Laravel is provided by the [elfsundae/laravel-hashid](https://github.com/ElfSundae/laravel-hashid) package.
-
-A PSR-15 middleware provided by the [icanhazstring/optimus-middleware](https://github.com/icanhazstring/optimus-middleware) package.
+* An integration with Laravel is provided by the [propaganistas/laravel-fakeid](https://packagist.org/packages/propaganistas/laravel-fakeid) package.
+* Laravel Optimus with multiple connections provided by the [cybercog/laravel-optimus](https://github.com/cybercog/laravel-optimus) package.
+* An integration with Silex 2 is provided by the [jaam/silex-optimus-provider](https://packagist.org/packages/jaam/silex-optimus-provider) package.
+* An integration with Laravel is provided by the [elfsundae/laravel-hashid](https://github.com/ElfSundae/laravel-hashid) package.
+* A PSR-15 middleware provided by the [icanhazstring/optimus-middleware](https://github.com/icanhazstring/optimus-middleware) package.
 
 ## Security contact information
 
 To report a security vulnerability, follow [these steps](https://tidelift.com/security).
+
+## License
+
+The [MIT](https://opensource.org/licenses/MIT) License.
\ No newline at end of file
diff --git a/composer.json b/composer.json
index 8b9879d..01a4185 100644
--- a/composer.json
+++ b/composer.json
@@ -32,5 +32,12 @@
     "suggest": {
         "ext-gmp": "Required for 32bit systems"
     },
-    "bin": ["bin/optimus"]
+    "bin": ["bin/optimus"],
+    "config": {
+        "sort-packages": true,
+        "preferred-install": "dist"
+    },
+    "scripts": {
+        "test": "vendor/bin/phpunit --testdox --color=always"
+    }
 }
diff --git a/tests/EnergonTest.php b/tests/EnergonTest.php
index 5f4be5b..90a8e32 100644
--- a/tests/EnergonTest.php
+++ b/tests/EnergonTest.php
@@ -33,9 +33,9 @@ public function testGeneratesRandomSet(int $bitLength)
         $set = Energon::generate(null, $bitLength);
 
         $this->assertCount(3, $set);
-        $this->assertInternalType('integer', $set[0], 'Unexpected type for prime number.');
-        $this->assertInternalType('integer', $set[1], 'Unexpected type for inverse number.');
-        $this->assertInternalType('integer', $set[2], 'Unexpected type for Xor.');
+        $this->assertIsInt($set[0], 'Unexpected type for prime number.');
+        $this->assertIsInt($set[1], 'Unexpected type for inverse number.');
+        $this->assertIsInt($set[2], 'Unexpected type for Xor.');
         $this->assertSame(
             '1',
             (new BigInteger($set[0]))
@@ -70,9 +70,9 @@ public function testGeneratesAskedSet(int $bitLength, int $prime, int $expectedI
         $set = Energon::generate($prime, $bitLength);
 
         $this->assertCount(3, $set);
-        $this->assertInternalType('integer', $set[0], 'Unexpected type for prime number.');
-        $this->assertInternalType('integer', $set[1], 'Unexpected type for inverse number.');
-        $this->assertInternalType('integer', $set[2], 'Unexpected type for Xor.');
+        $this->assertIsInt($set[0], 'Unexpected type for prime number.');
+        $this->assertIsInt($set[1], 'Unexpected type for inverse number.');
+        $this->assertIsInt($set[2], 'Unexpected type for Xor.');
         $this->assertEquals($prime, $set[0], 'Unexpected prime number.');
         $this->assertEquals($expectedInverse, $set[1], 'Unexpected inverse number.');
     }