diff --git a/CHANGELOG.md b/CHANGELOG.md
index 478e766e..26b796e9 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,22 @@
 
 All notable changes to this project will be documented in this file. See [standard-version](https://github.com/conventional-changelog/standard-version) for commit guidelines.
 
+<a name="2.4.0"></a>
+# [2.4.0](https://github.com/suzuki-shunsuke/go-graylog/compare/v2.3.3...v2.4.0) (2019-05-23)
+
+
+### Bug Fixes
+
+* fix Extractor API ([b865d5e](https://github.com/suzuki-shunsuke/go-graylog/commit/b865d5e))
+* fix Extractor API and add tests ([dc5ecfd](https://github.com/suzuki-shunsuke/go-graylog/commit/dc5ecfd))
+
+
+### Features
+
+* [#69](https://github.com/suzuki-shunsuke/go-graylog/issues/69) support Extractor API ([ebfab91](https://github.com/suzuki-shunsuke/go-graylog/commit/ebfab91))
+
+
+
 <a name="2.3.3"></a>
 ## [2.3.3](https://github.com/suzuki-shunsuke/go-graylog/compare/v2.3.2...v2.3.3) (2019-05-20)
 
diff --git a/package-lock.json b/package-lock.json
index 4439f98a..58269218 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,5 +1,5 @@
 {
-  "version": "2.3.3",
+  "version": "2.4.0",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
diff --git a/package.json b/package.json
index 014baa51..2a49ec2b 100644
--- a/package.json
+++ b/package.json
@@ -1,5 +1,5 @@
 {
-  "version": "2.3.3",
+  "version": "2.4.0",
   "scripts": {
     "release": "standard-version",
     "test": "bash scripts/test.sh",