diff --git a/CHANGELOG.md b/CHANGELOG.md
index 76c33ef..3c61240 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,7 +1,7 @@
 CHANGELOG
 =======================================
 
-## Unreleased
+## 2024.5.5
 
 ### General
 -
diff --git a/package.json b/package.json
index e545dd4..cf7184e 100644
--- a/package.json
+++ b/package.json
@@ -1,4 +1,4 @@
 {
   "name": "sandbox-actions-release",
-  "version": "2024.5.4"
+  "version": "2024.5.5-beta.0"
 }
diff --git a/packages/misskey-js/package.json b/packages/misskey-js/package.json
index c0012de..9af2cef 100644
--- a/packages/misskey-js/package.json
+++ b/packages/misskey-js/package.json
@@ -1,4 +1,4 @@
 {
   "name": "sandbox-actions-release-misskey-js",
-  "version": "2024.5.4"
+  "version": "2024.5.5-beta.0"
 }