diff --git a/ChangeLog b/ChangeLog
index ebae296..ef21ec9 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,6 @@
+Release 0.19.4 - 2025/03/24
+	* Support Ruby 3.4. (#526)
+
 Release 0.19.3 - 2024/08/02
 	* out_rdkafka2: Add `unrecoverable_error_codes` parameter to handle
 			specific error code as unrecoverable errors. `topic_authorization_failed`
diff --git a/fluent-plugin-kafka.gemspec b/fluent-plugin-kafka.gemspec
index 52a5aa7..a717ac0 100644
--- a/fluent-plugin-kafka.gemspec
+++ b/fluent-plugin-kafka.gemspec
@@ -13,7 +13,7 @@ Gem::Specification.new do |gem|
   gem.test_files    = gem.files.grep(%r{^(test|spec|features)/})
   gem.name          = "fluent-plugin-kafka"
   gem.require_paths = ["lib"]
-  gem.version       = '0.19.3'
+  gem.version       = '0.19.4'
   gem.required_ruby_version = ">= 2.1.0"
 
   gem.add_dependency "fluentd", [">= 0.10.58", "< 2"]