diff --git a/logs-concentrator/Gemfile b/logs-concentrator/Gemfile
index 6ac4408..fe0741a 100644
--- a/logs-concentrator/Gemfile
+++ b/logs-concentrator/Gemfile
@@ -7,4 +7,4 @@ git_source(:github) { |repo_name| "https://github.com/#{repo_name}" }
 gem "fluent-plugin-elasticsearch", "5.4.3"
 gem "fluent-plugin-opensearch", "1.1.5"
 gem "fluent-plugin-prometheus", "2.2.0"
-gem "fluentd", "1.17.1"
+gem "fluentd", "1.18.0"
diff --git a/logs-concentrator/Gemfile.lock b/logs-concentrator/Gemfile.lock
index ff909ec..ce93076 100644
--- a/logs-concentrator/Gemfile.lock
+++ b/logs-concentrator/Gemfile.lock
@@ -53,7 +53,7 @@ GEM
     fluent-plugin-prometheus (2.2.0)
       fluentd (>= 1.9.1, < 2)
       prometheus-client (>= 2.1.0)
-    fluentd (1.17.1)
+    fluentd (1.18.0)
       base64 (~> 0.2)
       bundler
       cool.io (>= 1.4.5, < 2.0.0)
@@ -73,7 +73,7 @@ GEM
     jmespath (1.6.2)
     json (2.7.6)
     logger (1.6.1)
-    msgpack (1.7.3)
+    msgpack (1.7.5)
     multi_json (1.15.0)
     net-http (0.4.1)
       uri
@@ -104,7 +104,7 @@ DEPENDENCIES
   fluent-plugin-elasticsearch (= 5.4.3)
   fluent-plugin-opensearch (= 1.1.5)
   fluent-plugin-prometheus (= 2.2.0)
-  fluentd (= 1.17.1)
+  fluentd (= 1.18.0)
 
 BUNDLED WITH
    2.5.22
diff --git a/logs-dispatcher/Gemfile b/logs-dispatcher/Gemfile
index f9ac72d..a35e955 100644
--- a/logs-dispatcher/Gemfile
+++ b/logs-dispatcher/Gemfile
@@ -18,4 +18,4 @@ gem "fluent-plugin-route", "1.0.0"
 gem "fluent-plugin-s3", "1.7.2"
 gem "fluent-plugin-splunk-enterprise", "0.10.2"
 gem "fluent-plugin-sumologic_output", "1.10.0"
-gem "fluentd", "1.17.1"
+gem "fluentd", "1.18.0"