diff --git a/packages/postman/README.md b/packages/postman/README.md
index 1e4a1ffa..dce7692f 100644
--- a/packages/postman/README.md
+++ b/packages/postman/README.md
@@ -195,7 +195,7 @@ void main() {
     ]
   };
 
-  var collection2 = postmanCollectionFromJsonStr(collectionJsonStr);
+  var collection2 = PostmanCollection.fromJson(collectionJson);
 
   print(collection2.info?.name);
   // API Dash