diff --git a/README.md b/README.md
index 979f4a1..af0a2fc 100644
--- a/README.md
+++ b/README.md
@@ -4,7 +4,8 @@
 [![All Contributors](https://img.shields.io/badge/all_contributors-12-orange.svg?style=flat-square)](#contributors)
 [![license](https://badgen.now.sh/badge/license/MIT)](./LICENSE)
 
-[CodeSandbox](https://codesandbox.io/s/github/jannikbuschke/formik-antd-example)
+[CodeSandbox (Ant Design 4)](https://codesandbox.io/s/github/jannikbuschke/formik-antd-example)
+[CodeSandbox (Ant Design 3)](https://codesandbox.io/s/github/jannikbuschke/formik-antd-example/tree/v1)
 
 :sparkles: **Ant Design 4 ready**