diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 8f0bd99..c287017 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -38,7 +38,6 @@ jobs:
       matrix:
         operating-system: ['ubuntu-latest']
         php-versions: ['7.1', '7.2', '7.3', '7.4', '8.0', '8.1', '8.2', '8.3', '8.4']
-        phpunit-versions: ['latest']
     steps:
       - name: Checkout
         uses: actions/checkout@v4
@@ -49,7 +48,7 @@ jobs:
           php-version: ${{ matrix.php-versions }}
           extensions: mbstring, intl, sodium
           ini-values: post_max_size=256M, max_execution_time=180
-          tools: psalm, phpunit:${{ matrix.phpunit-versions }}
+          tools: psalm, phpunit
 
       - name: Install dependencies
         run: composer install