diff --git a/composer.json b/composer.json
index 22bc3bd..821d947 100644
--- a/composer.json
+++ b/composer.json
@@ -7,16 +7,16 @@
     "php": "^7.2|^8.1",
     "composer-plugin-api": "^1.1|^2.0",
     "composer/composer": "^1.1|^2.0",
-    "symfony/framework-bundle": "^4.0|^5.0",
-    "symfony/process": "^4.0|^5.0",
-    "symfony/filesystem": "^4.0|^5.0",
-    "symfony/finder": "^4.0|^5.0",
+    "symfony/framework-bundle": "^4.0|^5.0|^6.0",
+    "symfony/process": "^4.0|^5.0|^6.0",
+    "symfony/filesystem": "^4.0|^5.0|^6.0",
+    "symfony/finder": "^4.0|^5.0|^6.0",
     "friendsofphp/php-cs-fixer": "^3.0",
     "squizlabs/php_codesniffer": "^3.5",
     "phpstan/phpstan": "^1.0"
   },
   "require-dev": {
-    "phpunit/phpunit": "^7.0"
+    "phpunit/phpunit": "^7.0|^8.0|^9.0"
   },
   "extra": {
     "class": "Twc\\Plugin\\Composer\\CodeQualityPlugin"