diff --git a/README.md b/README.md
index b5582e4e..1306e3fc 100644
--- a/README.md
+++ b/README.md
@@ -7,6 +7,8 @@
 
 ![GitHub Workflow Status](https://img.shields.io/github/actions/workflow/status/go-sigma/sigma/test.yml?style=for-the-badge) ![Codecov](https://img.shields.io/codecov/c/github/go-sigma/sigma?style=for-the-badge) ![GitHub repo size](https://img.shields.io/github/repo-size/go-sigma/sigma?style=for-the-badge)
 
+> We are heavily developing on the dev branch, and the next version will have a lot of changes..
+
 Sigma is an image registry that is extremely easy to deploy and maintain, and it adheres to the interface standards defined by the [OCI Distribution Specification 1.1](https://github.com/opencontainers/distribution-spec/tree/v1.1.0), it can also support any other client programs that follow the interface definition of the OCI Distribution Specification, such as [oras](https://github.com/oras-project/oras), [apptainer](https://github.com/apptainer/apptainer), [helm](https://github.com/helm/helm), and [nerdctl](https://github.com/containerd/nerdctl).
 
 ## Quick Start