diff --git a/README.md b/README.md
index bfa59369..3be6f1ae 100644
--- a/README.md
+++ b/README.md
@@ -6,6 +6,13 @@
 - Beatrice V2 トレーニングコード公開!!!
   - [トレーニングコードリポジトリ](https://huggingface.co/fierce-cats/beatrice-trainer)
   - [コラボ版](https://github.com/w-okada/beatrice-trainer-colab)
+- v.2.0.55-alpha
+  - [こちらを参照](https://github.com/w-okada/voice-changer/tree/v.2)
+  - improve:
+    - RVCのCPU負荷を削減
+    - WebSocket対応
+  - change
+    - 起動バッチでno_cuiオプションを有効化
 - v.2.0.50-alpha
   - [こちらを参照](https://github.com/w-okada/voice-changer/tree/v.2)
   - improve:
diff --git a/README_en.md b/README_en.md
index 97f0700c..181f661c 100644
--- a/README_en.md
+++ b/README_en.md
@@ -6,7 +6,15 @@
 - Beatrice V2 Training Code Released!!!
   - [Training Code Repository](https://huggingface.co/fierce-cats/beatrice-trainer)
   - [Colab Version](https://github.com/w-okada/beatrice-trainer-colab)
+- v.2.0.55-alpha
+  - [HERE](https://github.com/w-okada/voice-changer/tree/v.2)
+  - improve:
+    - Reduced CPU load of RVC
+    - WebSocket support
+  - change:
+    - Enable no_cui option in startup batch
 - v.2.0.50-alpha
+  - [HERE](https://github.com/w-okada/voice-changer/tree/v.2)
   - improve:
     - Improved performance in client mode
     - Bundled native client with Mac edition
diff --git a/README_ko.md b/README_ko.md
index 2d94710d..1c679011 100644
--- a/README_ko.md
+++ b/README_ko.md
@@ -6,6 +6,13 @@
 - Beatrice V2 훈련 코드 공개!!!
   - [훈련 코드 리포지토리](https://huggingface.co/fierce-cats/beatrice-trainer)
   - [Colab 버전](https://github.com/w-okada/beatrice-trainer-colab)
+- v.2.0.55-alpha
+  - [여기를 참조하십시오](https://github.com/w-okada/voice-changer/tree/v.2)
+  - 개선:
+    - RVC의 CPU 부하 감소
+    - WebSocket 지원
+  - 변경:
+    - 시작 배치에서 no_cui 옵션 활성화
 - v.2.0.50-alpha
   - [여기를 참조하십시오](https://github.com/w-okada/voice-changer/tree/v.2)
   - 개선사항: