diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index a63be8e..a76fae4 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -33,10 +33,7 @@ jobs:
           coverage: xdebug
           ini-file: development
       - run: composer install
-      - run: vendor/bin/phpunit --coverage-text --coverage-clover=clover.xml
-        if: ${{ matrix.php >= 7.3 }}
-      - run: vendor/bin/phpunit --coverage-text --coverage-clover=clover.xml -c phpunit.xml.legacy
-        if: ${{ matrix.php < 7.3 }}
+      - run: vendor/bin/phpunit --coverage-text --coverage-clover=clover.xml ${{ matrix.php < 7.3 && '-c phpunit.xml.legacy' || '' }}
       - name: Check 100% code coverage
         shell: php {0}
         run: |
diff --git a/composer.json b/composer.json
index 8a83e34..d50f551 100644
--- a/composer.json
+++ b/composer.json
@@ -15,7 +15,7 @@
         "react/promise": "^3 || ^2.2.1 || ^1.2.1"
     },
     "require-dev": {
-        "phpunit/phpunit": "^9.6 || ^5.7 || ^4.8.36",
+        "phpunit/phpunit": "^9.6 || ^8.5 || ^5.7 || ^4.8.36",
         "react/async": "^4 || ^3 || ^2",
         "react/event-loop": "^1.2",
         "react/http": "^1.8"