diff --git a/README.md b/README.md
index 6bc3ae4..31778fe 100644
--- a/README.md
+++ b/README.md
@@ -1,8 +1,6 @@
 # Unity SerializeReferenceExtensions
 
-[![Build](https://github.com/mackysoft/Unity-SerializeReferenceExtensions/actions/workflows/build.yaml/badge.svg)](https://github.com/mackysoft/Unity-SerializeReferenceExtensions/actions/workflows/build.yaml)
-[![Release](https://img.shields.io/github/v/release/mackysoft/Unity-SerializeReferenceExtensions)](https://github.com/mackysoft/Unity-SerializeReferenceExtensions/releases)
-[![openupm](https://img.shields.io/npm/v/com.mackysoft.serializereference-extensions?label=openupm&registry_uri=https://package.openupm.com)](https://openupm.com/packages/com.mackysoft.serializereference-extensions/)
+[![Build](https://github.com/mackysoft/Unity-SerializeReferenceExtensions/actions/workflows/build.yaml/badge.svg)](https://github.com/mackysoft/Unity-SerializeReferenceExtensions/actions/workflows/build.yaml) [![Release](https://img.shields.io/github/v/release/mackysoft/Unity-SerializeReferenceExtensions)](https://github.com/mackysoft/Unity-SerializeReferenceExtensions/releases) [![openupm](https://img.shields.io/npm/v/com.mackysoft.serializereference-extensions?label=openupm&registry_uri=https://package.openupm.com)](https://openupm.com/packages/com.mackysoft.serializereference-extensions/)
 
 **Inspired by [this post](https://qiita.com/tsukimi_neko/items/7922b2433ed4d8616cce).**