diff --git a/composer.json b/composer.json
index 2817c5a..0400072 100755
--- a/composer.json
+++ b/composer.json
@@ -12,7 +12,7 @@
   "license": "proprietary",
   "require": {
     "php": "*",
-    "symfony/string": "^5.1",
+    "symfony/string": "^5.1 || ^6.0 || ^7.0",
     "ext-json": "*"
   },
   "require-dev": {