diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 464f86af..e2fe5eb9 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -14,6 +14,7 @@ jobs:
           - 8.1
           - 8.2
           - 8.3
+          - 8.4
 
     steps:
       - uses: actions/checkout@v4
@@ -22,7 +23,7 @@ jobs:
         with:
           php-version: ${{ matrix.php }}
 
-      - run: composer validate
+      - run: composer validate --strict
 
       # TODO re-add caching
       - run: composer install --prefer-dist --no-progress --no-suggest
diff --git a/composer.json b/composer.json
index 6223b335..20493705 100644
--- a/composer.json
+++ b/composer.json
@@ -12,15 +12,15 @@
     ],
     "require": {
         "php": "^8.1",
-        "doctrine/orm": "^3.0"
+        "doctrine/orm": "^3.3"
     },
     "require-dev": {
-        "friendsofphp/php-cs-fixer": "^3.38",
-        "nesbot/carbon": "^2.71",
-        "phpstan/phpstan": "^1.10",
-        "phpunit/phpunit": "^10.4",
-        "symfony/cache": "^6.3 || ^7.0",
-        "symfony/yaml": "^6.3 || ^7.0"
+        "friendsofphp/php-cs-fixer": "^3.64",
+        "nesbot/carbon": "^2.72",
+        "phpstan/phpstan": "^1.12",
+        "phpunit/phpunit": "^10.5",
+        "symfony/cache": "^6.4 || ^7.0",
+        "symfony/yaml": "^6.4 || ^7.0"
     },
     "autoload": {
         "psr-4": {"DoctrineExtensions\\" : "src/"}