diff --git a/Gemfile b/Gemfile
index 250f884d..1a40e07c 100644
--- a/Gemfile
+++ b/Gemfile
@@ -9,7 +9,7 @@ gem 'fluent-plugin-elasticsearch', '6.0.0'
 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', '2.2.1'
+gem 'fluent-plugin-prometheus', '2.2.2'
 gem 'fluent-plugin-systemd', '1.1.1'
 gem 'fluent-plugin-record-modifier', '2.2.1'
 gem 'fluent-plugin-rewrite-tag-filter', '2.4.0'