diff --git a/Gemfile b/Gemfile
index feac6353..143cb950 100644
--- a/Gemfile
+++ b/Gemfile
@@ -9,7 +9,7 @@ gem 'fluent-plugin-elasticsearch', '5.4.3'
 gem 'fluent-plugin-kubernetes_metadata_filter', '3.7.1'
 gem 'fluent-plugin-multi-format-parser', '1.1.0'
 gem 'fluent-plugin-opensearch', '1.1.5'
-gem 'fluent-plugin-prometheus', '2.2.0'
+gem 'fluent-plugin-prometheus', '2.2.1'
 gem 'fluent-plugin-systemd', '1.1.0'
 gem 'oj', '3.16.9'
 gem 'fluent-plugin-record-modifier', '2.2.0'