diff --git a/.ruby-version b/.ruby-version
new file mode 100644
index 0000000..a4f52a5
--- /dev/null
+++ b/.ruby-version
@@ -0,0 +1 @@
+3.2.0
\ No newline at end of file
diff --git a/Dockerfile b/Dockerfile
index 74d66da..544d695 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -10,6 +10,7 @@ RUN apt-get update \
         gcc \
         libc-dev \
         libsnappy-dev \
+        libffi-dev \
         make \
         ruby-dev \
         sudo \
@@ -17,16 +18,19 @@ RUN apt-get update \
 
 # Fluentd plugin dependencies
 RUN gem install \
-        fluentd:1.16.2 \
+        async:1.31.0 \
+        async-http:0.60.2 \
+        bigdecimal:1.4.4 \
         concurrent-ruby:1.1.10 \
+        fluentd:1.16.5 \
         google-protobuf:3.21.12 \
+        json:2.6.3 \
         lru_redux:1.1.0 \
         net-http-persistent:4.0.2 \
+        oj:3.16.1 \
+        rexml:3.2.6 \
         snappy:0.3.0 \
-        specific_install:0.3.8
-
-# Use unreleased Kubeclient version with persistent HTTP connections.
-RUN gem specific_install https://github.com/ManageIQ/kubeclient --ref 220b8d7af52180f9a0f69cb73f0723d2618cf3ef
+        kubeclient:4.11.0
 
 # FluentD plugins to allow customers to forward data if needed to various cloud providers
 RUN gem install \
@@ -99,7 +103,7 @@ RUN gem install \
 RUN rm -rf /usr/local/bundle/cache/* \
  && find /usr/local/bundle/ -name "*.o" | xargs rm
 
-FROM fluent/fluentd:v1.16.2-debian${FLUENTD_ARCH}-1.0
+FROM fluent/fluentd:v1.16.5-debian${FLUENTD_ARCH}-1.0
 
 USER root
 
diff --git a/alpine.Dockerfile b/alpine.Dockerfile
index a1fe1ad..c3ebb03 100644
--- a/alpine.Dockerfile
+++ b/alpine.Dockerfile
@@ -13,23 +13,21 @@ RUN apk update \
 RUN echo 'gem: --no-document' >> /etc/gemrc
 
 # Fluentd plugin dependencies
-# Copied from https://github.com/fluent/fluentd-docker-image/blob/6a497560b45add04b9033955ae2e97c2616aa356/v1.16/alpine/Dockerfile
+# Copied from https://github.com/fluent/fluentd-docker-image/blob/6f347061a521a097cf8732044da110ab990416dc/v1.16/alpine/Dockerfile
 RUN gem install \
-        async:1.30.3 \
+        async:1.31.0 \
         async-http:0.60.2 \
         bigdecimal:1.4.4 \
         concurrent-ruby:1.1.10 \
-        fluentd:1.16.2 \
+        fluentd:1.16.5 \
         google-protobuf:3.21.12 \
         json:2.6.3 \
         lru_redux:1.1.0 \
         net-http-persistent:4.0.2 \
-        oj:3.15.0 \
+        oj:3.16.1 \
+        rexml:3.2.6 \
         snappy:0.3.0 \
-        specific_install:0.3.8
-
-# Use unreleased Kubeclient version with persistent HTTP connections.
-RUN gem specific_install https://github.com/ManageIQ/kubeclient --ref 220b8d7af52180f9a0f69cb73f0723d2618cf3ef
+        kubeclient:4.11.0
 
 # FluentD plugins to allow customers to forward data if needed to various cloud providers
 RUN gem install \
diff --git a/fluent-plugin-datapoint/Gemfile.lock b/fluent-plugin-datapoint/Gemfile.lock
index 32dd27a..f0afdfe 100644
--- a/fluent-plugin-datapoint/Gemfile.lock
+++ b/fluent-plugin-datapoint/Gemfile.lock
@@ -2,14 +2,14 @@ PATH
   remote: .
   specs:
     fluent-plugin-datapoint (2.0.0)
-      fluentd (= 1.16.2)
+      fluentd (= 1.16.5)
 
 GEM
   remote: https://rubygems.org/
   specs:
     concurrent-ruby (1.1.10)
     cool.io (1.7.1)
-    fluentd (1.16.2)
+    fluentd (1.16.5)
       bundler
       cool.io (>= 1.4.5, < 2.0.0)
       http_parser.rb (>= 0.5.1, < 0.9.0)
@@ -48,4 +48,4 @@ DEPENDENCIES
   test-unit (~> 3.0)
 
 BUNDLED WITH
-   2.4.1
+   2.5.10
diff --git a/fluent-plugin-datapoint/fluent-plugin-datapoint.gemspec b/fluent-plugin-datapoint/fluent-plugin-datapoint.gemspec
index fc718b2..d0a3635 100644
--- a/fluent-plugin-datapoint/fluent-plugin-datapoint.gemspec
+++ b/fluent-plugin-datapoint/fluent-plugin-datapoint.gemspec
@@ -18,5 +18,5 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency "bundler", "~> 2.0"
   spec.add_development_dependency "rake", "~> 13.0"
   spec.add_development_dependency "test-unit", "~> 3.0"
-  spec.add_runtime_dependency "fluentd", "= 1.16.2"
+  spec.add_runtime_dependency "fluentd", "= 1.16.5"
 end
diff --git a/fluent-plugin-enhance-k8s-metadata/Gemfile b/fluent-plugin-enhance-k8s-metadata/Gemfile
index 51d815b..b4e2a20 100644
--- a/fluent-plugin-enhance-k8s-metadata/Gemfile
+++ b/fluent-plugin-enhance-k8s-metadata/Gemfile
@@ -1,5 +1,3 @@
 source "https://rubygems.org"
 
-gem 'kubeclient', git: 'https://github.com/ManageIQ/kubeclient', ref: '220b8d7af52180f9a0f69cb73f0723d2618cf3ef' 
-
 gemspec
diff --git a/fluent-plugin-enhance-k8s-metadata/Gemfile.lock b/fluent-plugin-enhance-k8s-metadata/Gemfile.lock
index 1a146d0..d9dfac8 100644
--- a/fluent-plugin-enhance-k8s-metadata/Gemfile.lock
+++ b/fluent-plugin-enhance-k8s-metadata/Gemfile.lock
@@ -1,20 +1,10 @@
-GIT
-  remote: https://github.com/ManageIQ/kubeclient
-  revision: 220b8d7af52180f9a0f69cb73f0723d2618cf3ef
-  ref: 220b8d7af52180f9a0f69cb73f0723d2618cf3ef
-  specs:
-    kubeclient (4.9.3)
-      faraday (~> 1.1)
-      faraday_middleware (~> 1.0)
-      http (>= 3.0, < 5.0)
-      recursive-open-struct (~> 1.1, >= 1.1.1)
-
 PATH
   remote: .
   specs:
     fluent-plugin-enhance-k8s-metadata (2.0.0)
       concurrent-ruby (~> 1.1)
-      fluentd (= 1.16.2)
+      fluentd (= 1.16.5)
+      kubeclient (= 4.11.0)
       lru_redux (~> 1.1.0)
       net-http-persistent (~> 4.0)
 
@@ -32,36 +22,11 @@ GEM
       rexml
     domain_name (0.5.20190701)
       unf (>= 0.0.5, < 1.0.0)
-    faraday (1.10.0)
-      faraday-em_http (~> 1.0)
-      faraday-em_synchrony (~> 1.0)
-      faraday-excon (~> 1.1)
-      faraday-httpclient (~> 1.0)
-      faraday-multipart (~> 1.0)
-      faraday-net_http (~> 1.0)
-      faraday-net_http_persistent (~> 1.0)
-      faraday-patron (~> 1.0)
-      faraday-rack (~> 1.0)
-      faraday-retry (~> 1.0)
-      ruby2_keywords (>= 0.0.4)
-    faraday-em_http (1.0.0)
-    faraday-em_synchrony (1.0.0)
-    faraday-excon (1.1.0)
-    faraday-httpclient (1.0.1)
-    faraday-multipart (1.0.4)
-      multipart-post (~> 2)
-    faraday-net_http (1.0.1)
-    faraday-net_http_persistent (1.2.0)
-    faraday-patron (1.0.0)
-    faraday-rack (1.0.0)
-    faraday-retry (1.0.3)
-    faraday_middleware (1.2.0)
-      faraday (~> 1.0)
-    ffi (1.15.5)
+    ffi (1.16.3)
     ffi-compiler (1.0.1)
       ffi (>= 1.0.0)
       rake
-    fluentd (1.16.2)
+    fluentd (1.16.5)
       bundler
       cool.io (>= 1.4.5, < 2.0.0)
       http_parser.rb (>= 0.5.1, < 0.9.0)
@@ -79,23 +44,39 @@ GEM
       http-cookie (~> 1.0)
       http-form_data (~> 2.2)
       http-parser (~> 1.2.0)
+    http-accept (1.7.0)
     http-cookie (1.0.5)
       domain_name (~> 0.5)
     http-form_data (2.3.0)
     http-parser (1.2.3)
       ffi-compiler (>= 1.0, < 2.0)
     http_parser.rb (0.8.0)
+    jsonpath (1.1.5)
+      multi_json
+    kubeclient (4.11.0)
+      http (>= 3.0, < 6.0)
+      jsonpath (~> 1.0)
+      recursive-open-struct (~> 1.1, >= 1.1.1)
+      rest-client (~> 2.0)
     lru_redux (1.1.0)
+    mime-types (3.5.2)
+      mime-types-data (~> 3.2015)
+    mime-types-data (3.2024.0507)
     msgpack (1.5.1)
-    multipart-post (2.2.3)
+    multi_json (1.15.0)
     net-http-persistent (4.0.2)
       connection_pool (~> 2.2)
+    netrc (0.11.0)
     power_assert (2.0.3)
     public_suffix (5.0.4)
     rake (13.2.1)
     recursive-open-struct (1.1.3)
+    rest-client (2.1.0)
+      http-accept (>= 1.7.0, < 2.0)
+      http-cookie (>= 1.0.2, < 2.0)
+      mime-types (>= 1.16, < 4.0)
+      netrc (~> 0.8)
     rexml (3.2.6)
-    ruby2_keywords (0.0.5)
     serverengine (2.3.2)
       sigdump (~> 0.2.2)
     sigdump (0.2.5)
@@ -122,10 +103,9 @@ PLATFORMS
 DEPENDENCIES
   bundler (~> 2.0)
   fluent-plugin-enhance-k8s-metadata!
-  kubeclient!
   rake (~> 13.0)
   test-unit (~> 3.0)
   webmock (~> 3.0)
 
 BUNDLED WITH
-   2.4.1
+   2.5.10
diff --git a/fluent-plugin-enhance-k8s-metadata/fluent-plugin-enhance-k8s-metadata.gemspec b/fluent-plugin-enhance-k8s-metadata/fluent-plugin-enhance-k8s-metadata.gemspec
index 87ad99e..3d34c81 100644
--- a/fluent-plugin-enhance-k8s-metadata/fluent-plugin-enhance-k8s-metadata.gemspec
+++ b/fluent-plugin-enhance-k8s-metadata/fluent-plugin-enhance-k8s-metadata.gemspec
@@ -16,8 +16,8 @@ Gem::Specification.new do |spec|
   spec.require_paths = ['lib']
 
   spec.add_runtime_dependency 'concurrent-ruby', '~> 1.1'
-  spec.add_runtime_dependency "fluentd", "= 1.16.2"
-  # spec.add_runtime_dependency 'kubeclient', '4.9.1' # Git version of Kubeclient specified in Gemfile
+  spec.add_runtime_dependency "fluentd", "= 1.16.5"
+  spec.add_runtime_dependency 'kubeclient', '= 4.11.0'
   spec.add_runtime_dependency 'lru_redux', '~> 1.1.0'
   spec.add_runtime_dependency 'net-http-persistent', '~> 4.0'
 
diff --git a/fluent-plugin-events/Gemfile b/fluent-plugin-events/Gemfile
index 658b0dd..cb25163 100644
--- a/fluent-plugin-events/Gemfile
+++ b/fluent-plugin-events/Gemfile
@@ -1,5 +1,3 @@
 source "https://rubygems.org"
-
-gem 'kubeclient', git: 'https://github.com/ManageIQ/kubeclient', ref: '220b8d7af52180f9a0f69cb73f0723d2618cf3ef' 
  
 gemspec
diff --git a/fluent-plugin-events/Gemfile.lock b/fluent-plugin-events/Gemfile.lock
index 0c37e7f..a2f6270 100644
--- a/fluent-plugin-events/Gemfile.lock
+++ b/fluent-plugin-events/Gemfile.lock
@@ -1,19 +1,9 @@
-GIT
-  remote: https://github.com/ManageIQ/kubeclient
-  revision: 220b8d7af52180f9a0f69cb73f0723d2618cf3ef
-  ref: 220b8d7af52180f9a0f69cb73f0723d2618cf3ef
-  specs:
-    kubeclient (4.9.3)
-      faraday (~> 1.1)
-      faraday_middleware (~> 1.0)
-      http (>= 3.0, < 5.0)
-      recursive-open-struct (~> 1.1, >= 1.1.1)
-
 PATH
   remote: .
   specs:
     fluent-plugin-events (2.0.0)
-      fluentd (= 1.16.2)
+      fluentd (= 1.16.5)
+      kubeclient (= 4.11.0)
       net-http-persistent (~> 4.0)
 
 GEM
@@ -30,36 +20,11 @@ GEM
       rexml
     domain_name (0.5.20190701)
       unf (>= 0.0.5, < 1.0.0)
-    faraday (1.10.0)
-      faraday-em_http (~> 1.0)
-      faraday-em_synchrony (~> 1.0)
-      faraday-excon (~> 1.1)
-      faraday-httpclient (~> 1.0)
-      faraday-multipart (~> 1.0)
-      faraday-net_http (~> 1.0)
-      faraday-net_http_persistent (~> 1.0)
-      faraday-patron (~> 1.0)
-      faraday-rack (~> 1.0)
-      faraday-retry (~> 1.0)
-      ruby2_keywords (>= 0.0.4)
-    faraday-em_http (1.0.0)
-    faraday-em_synchrony (1.0.0)
-    faraday-excon (1.1.0)
-    faraday-httpclient (1.0.1)
-    faraday-multipart (1.0.4)
-      multipart-post (~> 2)
-    faraday-net_http (1.0.1)
-    faraday-net_http_persistent (1.2.0)
-    faraday-patron (1.0.0)
-    faraday-rack (1.0.0)
-    faraday-retry (1.0.3)
-    faraday_middleware (1.2.0)
-      faraday (~> 1.0)
     ffi (1.15.5)
     ffi-compiler (1.0.1)
       ffi (>= 1.0.0)
       rake
-    fluentd (1.16.2)
+    fluentd (1.16.5)
       bundler
       cool.io (>= 1.4.5, < 2.0.0)
       http_parser.rb (>= 0.5.1, < 0.9.0)
@@ -77,22 +42,39 @@ GEM
       http-cookie (~> 1.0)
       http-form_data (~> 2.2)
       http-parser (~> 1.2.0)
+    http-accept (1.7.0)
     http-cookie (1.0.5)
       domain_name (~> 0.5)
     http-form_data (2.3.0)
     http-parser (1.2.3)
       ffi-compiler (>= 1.0, < 2.0)
     http_parser.rb (0.8.0)
+    jsonpath (1.1.5)
+      multi_json
+    kubeclient (4.11.0)
+      http (>= 3.0, < 6.0)
+      jsonpath (~> 1.0)
+      recursive-open-struct (~> 1.1, >= 1.1.1)
+      rest-client (~> 2.0)
+    mime-types (3.5.2)
+      mime-types-data (~> 3.2015)
+    mime-types-data (3.2024.0507)
     mocha (2.2.0)
       ruby2_keywords (>= 0.0.5)
     msgpack (1.5.1)
-    multipart-post (2.2.3)
+    multi_json (1.15.0)
     net-http-persistent (4.0.2)
       connection_pool (~> 2.2)
+    netrc (0.11.0)
     power_assert (2.0.3)
     public_suffix (5.0.4)
     rake (13.2.1)
     recursive-open-struct (1.1.3)
+    rest-client (2.1.0)
+      http-accept (>= 1.7.0, < 2.0)
+      http-cookie (>= 1.0.2, < 2.0)
+      mime-types (>= 1.16, < 4.0)
+      netrc (~> 0.8)
     rexml (3.2.6)
     ruby2_keywords (0.0.5)
     serverengine (2.3.2)
@@ -121,11 +103,10 @@ PLATFORMS
 DEPENDENCIES
   bundler (~> 2.0)
   fluent-plugin-events!
-  kubeclient!
   mocha
   rake (~> 13.0)
   test-unit (~> 3.0)
   webmock (~> 3.0)
 
 BUNDLED WITH
-   2.4.1
+   2.5.10
diff --git a/fluent-plugin-events/fluent-plugin-events.gemspec b/fluent-plugin-events/fluent-plugin-events.gemspec
index 470268e..6ce928c 100644
--- a/fluent-plugin-events/fluent-plugin-events.gemspec
+++ b/fluent-plugin-events/fluent-plugin-events.gemspec
@@ -18,8 +18,8 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency "bundler", "~> 2.0"
   spec.add_development_dependency "rake", "~> 13.0"
   spec.add_development_dependency "test-unit", "~> 3.0"
-  spec.add_runtime_dependency "fluentd", "= 1.16.2"
-  # spec.add_runtime_dependency 'kubeclient', '4.9.1' # Git version of Kubeclient specified in Gemfile
+  spec.add_runtime_dependency "fluentd", "= 1.16.5"
+  spec.add_runtime_dependency 'kubeclient', '= 4.11.0'
   spec.add_runtime_dependency 'net-http-persistent', '~> 4.0'
   spec.add_development_dependency 'webmock', '~> 3.0'
   spec.add_development_dependency 'mocha'
diff --git a/fluent-plugin-kubernetes-metadata-filter/Gemfile.lock b/fluent-plugin-kubernetes-metadata-filter/Gemfile.lock
index 1218e1a..133cfb4 100644
--- a/fluent-plugin-kubernetes-metadata-filter/Gemfile.lock
+++ b/fluent-plugin-kubernetes-metadata-filter/Gemfile.lock
@@ -13,7 +13,7 @@ PATH
   remote: .
   specs:
     fluent-plugin-kubernetes-metadata-filter (2.5.3)
-      fluentd (= 1.16.2)
+      fluentd (= 1.16.5)
       lru_redux
       net-http-persistent (~> 4.0)
 
@@ -67,7 +67,7 @@ GEM
     ffi-compiler (1.0.1)
       ffi (>= 1.0.0)
       rake
-    fluentd (1.16.2)
+    fluentd (1.16.5)
       bundler
       cool.io (>= 1.4.5, < 2.0.0)
       http_parser.rb (>= 0.5.1, < 0.9.0)
@@ -179,4 +179,4 @@ DEPENDENCIES
   yajl-ruby
 
 BUNDLED WITH
-   2.4.1
+   2.5.10
diff --git a/fluent-plugin-kubernetes-metadata-filter/fluent-plugin-kubernetes-metadata-filter.gemspec b/fluent-plugin-kubernetes-metadata-filter/fluent-plugin-kubernetes-metadata-filter.gemspec
index 3d84e22..9a11f3e 100644
--- a/fluent-plugin-kubernetes-metadata-filter/fluent-plugin-kubernetes-metadata-filter.gemspec
+++ b/fluent-plugin-kubernetes-metadata-filter/fluent-plugin-kubernetes-metadata-filter.gemspec
@@ -17,7 +17,7 @@ Gem::Specification.new do |gem|
 
   gem.required_ruby_version = '>= 2.5.0'
 
-  gem.add_runtime_dependency "fluentd", "= 1.16.2"
+  gem.add_runtime_dependency "fluentd", "= 1.16.5"
   gem.add_runtime_dependency "lru_redux"
   # gem.add_runtime_dependency 'kubeclient', '< 5' # Git version of Kubeclient specified in Gemfile
   gem.add_runtime_dependency 'net-http-persistent', '~> 4.0'
diff --git a/fluent-plugin-kubernetes-sumologic/Gemfile.lock b/fluent-plugin-kubernetes-sumologic/Gemfile.lock
index c84dd67..87c7c4a 100644
--- a/fluent-plugin-kubernetes-sumologic/Gemfile.lock
+++ b/fluent-plugin-kubernetes-sumologic/Gemfile.lock
@@ -2,7 +2,7 @@ PATH
   remote: .
   specs:
     fluent-plugin-kubernetes-sumologic (2.0.0)
-      fluentd (= 1.16.2)
+      fluentd (= 1.16.5)
       httpclient (~> 2.8.0)
 
 GEM
@@ -14,7 +14,7 @@ GEM
     cool.io (1.7.1)
     crack (0.4.5)
       rexml
-    fluentd (1.16.2)
+    fluentd (1.16.5)
       bundler
       cool.io (>= 1.4.5, < 2.0.0)
       http_parser.rb (>= 0.5.1, < 0.9.0)
@@ -62,4 +62,4 @@ DEPENDENCIES
   webmock
 
 BUNDLED WITH
-   2.4.19
+   2.5.10
diff --git a/fluent-plugin-kubernetes-sumologic/fluent-plugin-kubernetes-sumologic.gemspec b/fluent-plugin-kubernetes-sumologic/fluent-plugin-kubernetes-sumologic.gemspec
index baca2e8..461addc 100644
--- a/fluent-plugin-kubernetes-sumologic/fluent-plugin-kubernetes-sumologic.gemspec
+++ b/fluent-plugin-kubernetes-sumologic/fluent-plugin-kubernetes-sumologic.gemspec
@@ -21,6 +21,6 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency "bundler", "~> 2"
   spec.add_development_dependency "rake"
   spec.add_development_dependency 'test-unit', '~> 3.6.0'
-  spec.add_runtime_dependency "fluentd", "= 1.16.2"
+  spec.add_runtime_dependency "fluentd", "= 1.16.5"
   spec.add_runtime_dependency 'httpclient', '~> 2.8.0'
 end
diff --git a/fluent-plugin-prometheus-format/Gemfile.lock b/fluent-plugin-prometheus-format/Gemfile.lock
index a7a8071..4346004 100644
--- a/fluent-plugin-prometheus-format/Gemfile.lock
+++ b/fluent-plugin-prometheus-format/Gemfile.lock
@@ -2,14 +2,14 @@ PATH
   remote: .
   specs:
     fluent-plugin-prometheus-format (2.0.0)
-      fluentd (= 1.16.2)
+      fluentd (= 1.16.5)
 
 GEM
   remote: https://rubygems.org/
   specs:
     concurrent-ruby (1.1.10)
     cool.io (1.7.1)
-    fluentd (1.16.2)
+    fluentd (1.16.5)
       bundler
       cool.io (>= 1.4.5, < 2.0.0)
       http_parser.rb (>= 0.5.1, < 0.9.0)
@@ -48,4 +48,4 @@ DEPENDENCIES
   test-unit (~> 3.0)
 
 BUNDLED WITH
-   2.4.1
+   2.5.10
diff --git a/fluent-plugin-prometheus-format/fluent-plugin-prometheus-format.gemspec b/fluent-plugin-prometheus-format/fluent-plugin-prometheus-format.gemspec
index ba2c089..e150171 100644
--- a/fluent-plugin-prometheus-format/fluent-plugin-prometheus-format.gemspec
+++ b/fluent-plugin-prometheus-format/fluent-plugin-prometheus-format.gemspec
@@ -18,5 +18,5 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency "bundler", "~> 2.0"
   spec.add_development_dependency "rake", "~> 13.0"
   spec.add_development_dependency "test-unit", "~> 3.0"
-  spec.add_runtime_dependency "fluentd", "= 1.16.2"
+  spec.add_runtime_dependency "fluentd", "= 1.16.5"
 end
diff --git a/fluent-plugin-protobuf/Gemfile.lock b/fluent-plugin-protobuf/Gemfile.lock
index 560c690..9502b12 100644
--- a/fluent-plugin-protobuf/Gemfile.lock
+++ b/fluent-plugin-protobuf/Gemfile.lock
@@ -2,7 +2,7 @@ PATH
   remote: .
   specs:
     fluent-plugin-protobuf (2.0.0)
-      fluentd (= 1.16.2)
+      fluentd (= 1.16.5)
       google-protobuf (~> 3.17)
       snappy (> 0)
 
@@ -11,7 +11,7 @@ GEM
   specs:
     concurrent-ruby (1.1.10)
     cool.io (1.7.1)
-    fluentd (1.16.2)
+    fluentd (1.16.5)
       bundler
       cool.io (>= 1.4.5, < 2.0.0)
       http_parser.rb (>= 0.5.1, < 0.9.0)
@@ -52,4 +52,4 @@ DEPENDENCIES
   test-unit (~> 3.0)
 
 BUNDLED WITH
-   2.4.1
+   2.5.10
diff --git a/fluent-plugin-protobuf/fluent-plugin-protobuf.gemspec b/fluent-plugin-protobuf/fluent-plugin-protobuf.gemspec
index 2ad5c22..daf0aea 100644
--- a/fluent-plugin-protobuf/fluent-plugin-protobuf.gemspec
+++ b/fluent-plugin-protobuf/fluent-plugin-protobuf.gemspec
@@ -20,5 +20,5 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency "test-unit", "~> 3.0"
   spec.add_runtime_dependency "google-protobuf", "~> 3.17"
   spec.add_runtime_dependency "snappy", "> 0"
-  spec.add_runtime_dependency "fluentd", "= 1.16.2"
+  spec.add_runtime_dependency "fluentd", "= 1.16.5"
 end