diff --git a/.github/workflows/grumphp.yaml b/.github/workflows/grumphp.yaml
index df17c3c..dfa4f21 100644
--- a/.github/workflows/grumphp.yaml
+++ b/.github/workflows/grumphp.yaml
@@ -7,7 +7,7 @@ jobs:
         strategy:
             matrix:
                 operating-system: [ubuntu-latest]
-                php-versions: ['8.0', '8.1', '8.2']
+                php-versions: ['8.1', '8.2', '8.3']
                 composer-options: ['', '--prefer-lowest']
             fail-fast: false
         name: PHP ${{ matrix.php-versions }} @ ${{ matrix.operating-system }} with ${{ matrix.composer-options }}
diff --git a/composer.json b/composer.json
index 64f1e81..e5895b1 100644
--- a/composer.json
+++ b/composer.json
@@ -4,9 +4,9 @@
     "type": "library",
     "require-dev": {
         "friendsofphp/php-cs-fixer": "^3.13",
-        "phpro/grumphp-shim": "^1.14",
+        "phpro/grumphp-shim": "^2.3",
         "phpspec/phpspec": "^7.2",
-        "symfony/validator": "^5.4 || ^6.0",
+        "symfony/validator": "^5.4 || ^6.0 || ^7.0",
         "sebastian/comparator": "^4.0"
     },
     "license": "MIT",
@@ -17,7 +17,7 @@
         }
     ],
     "require": {
-        "php": "^8.0"
+        "php": "~8.1.0 || ~8.2.0 || ~8.3.0"
     },
     "config": {
         "sort-packages": true,