diff --git a/README.md b/README.md
index 46b2366..79de99c 100644
--- a/README.md
+++ b/README.md
@@ -9,13 +9,11 @@ use Money\Money;
 use PetrKnap\SpaydQr\SpaydQr;
 
 $iban = 'CZ7801000000000000000123';
-$amount = 799.50;
+$amount = Money::CZK((int)(799.50 * 100));
 
 echo '<img src="' .
-    SpaydQr::create(
-        $iban,
-        Money::CZK($amount * 100)
-    )->getDataUri()
+    SpaydQr::create($iban, $amount)
+        ->getDataUri()
 . '">';
 ```
 
diff --git a/composer.json b/composer.json
index da125fd..b8fe016 100644
--- a/composer.json
+++ b/composer.json
@@ -29,7 +29,7 @@
   "require": {
     "php": ">=8.0",
     "endroid/qr-code": "^3.5",
-    "moneyphp/money": "^3.2",
+    "moneyphp/money": "^4.0",
     "sunfoxcz/spayd-php": "^2.0"
   },
   "require-dev": {