diff --git a/composer.json b/composer.json
index 6477e13..6dca92d 100644
--- a/composer.json
+++ b/composer.json
@@ -22,7 +22,7 @@
   },
   "require-dev": {
     "ergebnis/composer-normalize": "^2.6",
-    "friendsofphp/php-cs-fixer": "~2",
+    "friendsofphp/php-cs-fixer": "~2 || ~0",
     "maglnet/composer-require-checker": "^2.1",
     "nikic/php-parser": "^4.6",
     "php-parallel-lint/php-parallel-lint": "^1.2",