diff --git a/.github/workflows/phpunit.yml b/.github/workflows/phpunit.yml
index 258ae6a..0822952 100644
--- a/.github/workflows/phpunit.yml
+++ b/.github/workflows/phpunit.yml
@@ -9,7 +9,7 @@ jobs:
         strategy:
             fail-fast: true
             matrix:
-                php: [ "8.2", "8.3" ]
+                php: [ "8.2", "8.3", "8.4" ]
                 symfony: [ "6.0", "7.0" ]
 
         name: PHP ${{ matrix.php }}, Symfony ${{ matrix.symfony }} ${{ matrix.prefer }}
@@ -29,7 +29,7 @@ jobs:
                 run: |
                     composer require --no-interaction \
                         symfony/console:^${{ matrix.symfony }} \
-                        symfony/var-dumper:^${{ matrix.symfony }} \
+                        symfony/var-dumper:^${{ matrix.symfony }}
 
             -   name: Execute tests
                 run: sudo vendor/bin/phpunit
diff --git a/composer.json b/composer.json
index c8fd7e1..e51d427 100644
--- a/composer.json
+++ b/composer.json
@@ -42,7 +42,7 @@
         "symfony/console": "^6.0 || ^7.0"
     },
     "require-dev": {
-        "phpunit/phpunit": "^11.0",
+        "phpunit/phpunit": "^11.0 || ^12.0",
         "symfony/var-dumper": "^6.0 || ^7.0"
     },
     "minimum-stability": "stable",
@@ -67,4 +67,4 @@
         "preferred-install": "dist",
         "sort-packages": true
     }
-}
\ No newline at end of file
+}