diff --git a/clients/cmd/fluentd/docker/Gemfile b/clients/cmd/fluentd/docker/Gemfile
index d3033ffc3350d..428c18b840894 100644
--- a/clients/cmd/fluentd/docker/Gemfile
+++ b/clients/cmd/fluentd/docker/Gemfile
@@ -2,5 +2,5 @@
 
 source 'https://rubygems.org'
 
-gem 'fluentd', '1.17.1'
+gem 'fluentd', '1.18.0'
 gem 'fluent-plugin-multi-format-parser', '~>1.1.0'