diff --git a/.editorconfig b/.editorconfig
index 989704a..be2498e 100644
--- a/.editorconfig
+++ b/.editorconfig
@@ -12,6 +12,6 @@ indent_size = 4
 insert_final_newline = true
 trim_trailing_whitespace = true
 
-# .travis.yml
-[.travis.yml]
+# YAML files
+[*.yml]
 indent_size = 2
diff --git a/.github/workflows/coding-standards.yml b/.github/workflows/coding-standards.yml
new file mode 100644
index 0000000..49ce3d5
--- /dev/null
+++ b/.github/workflows/coding-standards.yml
@@ -0,0 +1,37 @@
+name: Coding Standards
+
+on: [ pull_request ]
+
+jobs:
+  phpcs:
+    name: PHP coding standards
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Set up PHP
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: '8.1'
+          coverage: none
+          tools: composer, cs2pr
+
+      - name: Validate composer.json and composer.lock
+        run: composer validate --strict
+
+      - name: Cache Composer packages
+        id: composer-cache
+        uses: actions/cache@v2
+        with:
+          path: vendor
+          key: ${{ runner.os }}-php-${{ hashFiles('**/composer.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-php-
+
+      - name: Install dependencies
+        run: composer install --prefer-dist --no-progress
+
+      - name: Check coding standards using PHPCS
+        run: vendor/bin/phpcs -q -n --report=checkstyle --extensions=php,phpt --warning-severity=0 | cs2pr
+
diff --git a/.github/workflows/php-tester.yml b/.github/workflows/php-tester.yml
new file mode 100644
index 0000000..4336833
--- /dev/null
+++ b/.github/workflows/php-tester.yml
@@ -0,0 +1,45 @@
+name: PHP Tests
+
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+    branches:
+      - master
+
+jobs:
+  test:
+    name: ${{ matrix.php }} test
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        php: [ '7.2', '7.3', '7.4', '8.0', '8.1' ]
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Setup PHP
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: ${{ matrix.php }}
+          extensions: json
+          tools: composer
+
+      - name: Validate composer.json and composer.lock
+        run: composer validate --strict
+
+      - name: Cache Composer packages
+        id: composer-cache
+        uses: actions/cache@v2
+        with:
+          path: vendor
+          key: ${{ runner.os }}-${{ matrix.php }}-${{ hashFiles('**/composer.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-${{ matrix.php }}-
+
+      - name: Install dependencies
+        run: composer install --prefer-dist --no-progress
+
+      - name: Run test suite
+        run: vendor/bin/tester tests -C -s -p php
diff --git a/.travis.yml b/.travis.yml
deleted file mode 100644
index 1e5be35..0000000
--- a/.travis.yml
+++ /dev/null
@@ -1,11 +0,0 @@
-language: php
-php:
-  - 7.2
-  - 7.3
-  - 7.4
-  - 8.0
-before_script:
-  - composer install --no-interaction --dev --prefer-source
-script:
-  - vendor/bin/phpcs --extensions=php,phpt --warning-severity=0
-  - vendor/bin/tester tests -s -p php
diff --git a/composer.json b/composer.json
index 8d074f7..ccd2d34 100644
--- a/composer.json
+++ b/composer.json
@@ -9,7 +9,7 @@
         "frontend",
         "design"
     ],
-    "homepage": "http://mexitek.github.com/phpColors/",
+    "homepage": "https://github.com/mexitek/phpColors",
     "license": "MIT",
     "authors": [
         {
diff --git a/tests/colorConvertHslToHex.phpt b/tests/colorConvertHslToHex.phpt
index fd3adbd..3d22223 100644
--- a/tests/colorConvertHslToHex.phpt
+++ b/tests/colorConvertHslToHex.phpt
@@ -33,7 +33,7 @@ $white = [
 ];
 
 // Test cases.
-$colorsToConvert = array(
+$colorsToConvert = [
     'blue' => [ // hsl(194, 100%, 40%)
         'hex' => '009ccc',
         'hsl' => $blue,
@@ -54,8 +54,7 @@ $colorsToConvert = array(
         'hex' => 'ffffff',
         'hsl' => $white,
     ],
-);
-
+];
 
 foreach ($colorsToConvert as $color) {
     $hsl = $color['hsl'];