diff --git a/.github/workflows/php.yml b/.github/workflows/php.yml
new file mode 100644
index 0000000..da9e095
--- /dev/null
+++ b/.github/workflows/php.yml
@@ -0,0 +1,34 @@
+name: PHP Composer
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Validate composer.json and composer.lock
+        run: composer validate
+
+      - 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
+        if: steps.composer-cache.outputs.cache-hit != 'true'
+        run: composer install --prefer-dist --no-progress --no-suggest
+
+      - name: Run test suite
+        run: composer run-script test
diff --git a/composer.json b/composer.json
index 3494149..e8b2c34 100644
--- a/composer.json
+++ b/composer.json
@@ -30,10 +30,12 @@
     "phpdoc-md": [
       "@php vendor/bin/phpdoc-md generate src > docs/phpdoc.md",
       "@php scripts/phpdoc-md-fix-anchors.php docs/phpdoc.md"
-    ]
+    ],
+    "test": "phpunit"
   },
   "scripts-descriptions": {
-    "phpdoc-md": "Generate markdown from phpdoc comments"
+    "phpdoc-md": "Generate markdown from phpdoc comments",
+    "phpunit": "Run PHPUnit tests"
   },
  "license": "MIT",
   "authors": [