diff --git a/composer.json b/composer.json
index a15383ff..6325f239 100644
--- a/composer.json
+++ b/composer.json
@@ -30,7 +30,7 @@
         "php-parallel-lint/php-parallel-lint": "^1.3.2",
         "psr/container": "^1.0|^2.0.2",
         "psr/simple-cache": "^1.0|^2.0|^3.0",
-        "sebastian/diff": "^4.0|^5.0.3",
+        "sebastian/diff": "^4.0|^5.0.3|^6.0",
         "slevomat/coding-standard": "^8.14.1",
         "squizlabs/php_codesniffer": "^3.7.2",
         "symfony/cache": "^5.4|^6.0|^7.0",