diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index c4d8f0a..447277d 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -11,10 +11,10 @@ jobs:
       - name: Setup composer
         uses: php-actions/composer@v5
         with:
-          php_version: 7.1
+          php_version: 7.3
       - name: PHPUnit tests
         uses: php-actions/phpunit@v2
         with:
-          php_version: 7.1
+          php_version: 7.3
           bootstrap: tests/bootstrap.php
           configuration: phpunit.xml
\ No newline at end of file