diff --git a/composer.json b/composer.json
index 30842f1..39121b3 100644
--- a/composer.json
+++ b/composer.json
@@ -18,7 +18,7 @@
   ],
   "require": {
     "php": ">=7.4.0",
-    "symfony/polyfill-mbstring": "^1.29.0"
+    "symfony/polyfill-mbstring": "^1.30.0"
   },
   "require-dev": {
     "phpunit/phpunit": "^9.6|^11.2.2"