diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5889825..190c935 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+# 0.2.2 - 2025-08-27
+
+* in_fluent_package_update_notifier: support multi worker (#8)
+
 # 0.2.1 - 2025-08-22
 
 * Relax log level (#6)
diff --git a/fluent-plugin-fluent-package-update-notifier.gemspec b/fluent-plugin-fluent-package-update-notifier.gemspec
index 8f900ab..05cfef9 100644
--- a/fluent-plugin-fluent-package-update-notifier.gemspec
+++ b/fluent-plugin-fluent-package-update-notifier.gemspec
@@ -3,7 +3,7 @@ $LOAD_PATH.unshift(lib) unless $LOAD_PATH.include?(lib)
 
 Gem::Specification.new do |spec|
   spec.name    = "fluent-plugin-fluent-package-update-notifier"
-  spec.version = "0.2.1"
+  spec.version = "0.2.2"
   spec.authors = ["Kentaro Hayashi"]
   spec.email   = ["hayashi@clear-code.com"]