diff --git a/composer.json b/composer.json
index ac1fa2a..683bc44 100644
--- a/composer.json
+++ b/composer.json
@@ -21,7 +21,7 @@
     "php": "^7.4 || ^8.0",
     "illuminate/contracts": "^6.0 || ^7.0 || ^8.0",
     "illuminate/support": "^6.0 || ^7.0 || ^8.0",
-    "wnx/php-swiss-cantons": "^3.0"
+    "wnx/php-swiss-cantons": "^4.0"
   },
   "require-dev": {
     "orchestra/testbench": "^4.0 || ^5.0 || ^6.0",