diff --git a/composer.json b/composer.json
index fb80b8f..db44292 100644
--- a/composer.json
+++ b/composer.json
@@ -10,7 +10,6 @@
     ],
     "require": {
         "php": "^8.0",
-        "ext-json": "*",
         "brick/math": "^0.8.8 || ^0.9 || ^0.10 || ^0.11 || ^0.12 || ^0.13",
         "ramsey/collection": "^1.2 || ^2.0"
     },