diff --git a/.github/workflows/php.yml b/.github/workflows/php.yml
index 685188c..b85b2e4 100644
--- a/.github/workflows/php.yml
+++ b/.github/workflows/php.yml
@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-18.04
     strategy:
       matrix:
-        php-versions: ['7.0', '7.1', '7.2', '7.3', '7.4']
+        php-versions: ['7.3', '7.4', '8.0', '8.1']
     steps:
     - name: Checkout
       uses: actions/checkout@v2
diff --git a/composer.json b/composer.json
index 8e84507..52fbec0 100644
--- a/composer.json
+++ b/composer.json
@@ -24,10 +24,10 @@
         "sort-packages": true
     },
     "require": {
-        "php": "^7.0"
+        "php": "^7.3 || ^8.0"
     },
     "require-dev": {
-        "phpunit/phpunit": "^6.0",
+        "phpunit/phpunit": "^9.0",
         "squizlabs/php_codesniffer": "^3.2"
     },
     "autoload": {