diff --git a/composer.json b/composer.json
index 800c2ae..c4fd46c 100644
--- a/composer.json
+++ b/composer.json
@@ -33,7 +33,7 @@
     "psr/http-factory": "^1.0",
     "psr/http-message": "^1.0 || ^2.0",
     "ralouphie/getallheaders": "^3.0",
-    "symfony/polyfill-php80": "^1.28"
+    "symfony/polyfill-php80": "^1.29"
   },
   "require-dev": {
     "ext-json": "*",