diff --git a/CHANGELOG.md b/CHANGELOG.md
index 11984ac..a191741 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,12 @@
+## [4.0.5](https://github.com/socketio/socket.io-parser/compare/4.0.4...4.0.5) (2022-06-27)
+
+
+### Bug Fixes
+
+* check the format of the index of each attachment ([b559f05](https://github.com/socketio/socket.io-parser/commit/b559f050ee02bd90bd853b9823f8de7fa94a80d4))
+
+
+
 ## [4.0.4](https://github.com/socketio/socket.io-parser/compare/4.0.3...4.0.4) (2021-01-15)
 
 
diff --git a/package.json b/package.json
index f15f403..b51d5c6 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "socket.io-parser",
-  "version": "4.0.4",
+  "version": "4.0.5",
   "description": "socket.io protocol parser",
   "repository": {
     "type": "git",