diff --git a/README.md b/README.md
index 6fc95de..3e0d5d9 100644
--- a/README.md
+++ b/README.md
@@ -21,7 +21,7 @@ to your `composer.json` file:
 ```json
 {
     "require": {
-        "dercoder/omnipay-webmoney": "~4.0"
+        "dercoder/omnipay-webmoney": "^5.0"
     }
 }
 ```