diff --git a/.github/workflows/run-tests.yml b/.github/workflows/run-tests.yml
index 62cb58b..bc0fffe 100644
--- a/.github/workflows/run-tests.yml
+++ b/.github/workflows/run-tests.yml
@@ -18,20 +18,21 @@ jobs:
       - name: Checkout code
         uses: actions/checkout@v2
 
-      - name: Cache dependencies
-        uses: actions/cache@v2
-        with:
-          path: ~/.composer/cache/files
-          key: dependencies-php-${{ matrix.php }}-composer-${{ hashFiles('composer.json') }}
-
       - name: Setup PHP
         uses: shivammathur/setup-php@v2
         with:
           php-version: ${{ matrix.php }}
           coverage: none
+          tools: composer:v2
+
+      - name: Cache dependencies
+        uses: actions/cache@v2
+        with:
+          path: ~/.composer/cache/files
+          key: dependencies-php-${{ matrix.php }}-composer-${{ hashFiles('composer.json') }}
 
       - name: Install dependencies
         run: composer update --${{ matrix.dependency-version }} --prefer-dist --no-interaction --no-suggest
 
       - name: Execute tests
-        run: vendor/bin/phpunit
+        run: php vendor/bin/phpunit
diff --git a/composer.json b/composer.json
index be7b1bb..a692be8 100644
--- a/composer.json
+++ b/composer.json
@@ -32,7 +32,6 @@
     },
     "require-dev": {
         "phpunit/phpunit": "^7.5",
-        "phpstan/phpstan": "0.12.56",
-        "infection/infection": "^0.20.2"
+        "phpstan/phpstan": "0.12.56"
     }
 }