diff --git a/Gemfile.lock b/Gemfile.lock
index de8da78..3995821 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,11 +1,11 @@
 PATH
   remote: .
   specs:
-    fluent-plugin-kubernetes-metrics (1.1.12)
+    fluent-plugin-kubernetes-metrics (1.2.0)
       fluentd (>= 1.9.1)
       kubeclient (~> 4.9.3)
-      multi_json (~> 1.14.1)
-      oj (~> 3.10.2)
+      multi_json (~> 1.14)
+      oj (~> 3.10)
 
 GEM
   remote: https://rubygems.org/
@@ -23,12 +23,12 @@ GEM
     ffi-compiler (1.0.1)
       ffi (>= 1.0.0)
       rake
-    fluentd (1.14.6)
+    fluentd (1.15.1)
       bundler
       cool.io (>= 1.4.5, < 2.0.0)
       http_parser.rb (>= 0.5.1, < 0.9.0)
       msgpack (>= 1.3.1, < 2.0.0)
-      serverengine (>= 2.2.5, < 3.0.0)
+      serverengine (>= 2.3.0, < 3.0.0)
       sigdump (~> 0.2.2)
       strptime (>= 0.2.4, < 1.0.0)
       tzinfo (>= 1.0, < 3.0)
@@ -42,14 +42,14 @@ GEM
       http-form_data (~> 2.2)
       http-parser (~> 1.2.0)
     http-accept (1.7.0)
-    http-cookie (1.0.4)
+    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)
     json (2.6.1)
-    jsonpath (1.1.0)
+    jsonpath (1.1.2)
       multi_json
     kubeclient (4.9.3)
       http (>= 3.0, < 5.0)
@@ -59,10 +59,10 @@ GEM
     mime-types (3.4.1)
       mime-types-data (~> 3.2015)
     mime-types-data (3.2022.0105)
-    msgpack (1.5.1)
-    multi_json (1.14.1)
+    msgpack (1.5.4)
+    multi_json (1.15.0)
     netrc (0.11.0)
-    oj (3.10.18)
+    oj (3.13.20)
     power_assert (2.0.1)
     public_suffix (4.0.6)
     rake (13.0.6)
@@ -73,7 +73,7 @@ GEM
       mime-types (>= 1.16, < 4.0)
       netrc (~> 0.8)
     rexml (3.2.5)
-    serverengine (2.2.5)
+    serverengine (2.3.0)
       sigdump (~> 0.2.2)
     sigdump (0.2.4)
     simplecov (0.16.1)
@@ -84,13 +84,13 @@ GEM
     strptime (0.2.5)
     test-unit (3.3.9)
       power_assert
-    tzinfo (2.0.4)
+    tzinfo (2.0.5)
       concurrent-ruby (~> 1.0)
-    tzinfo-data (1.2022.1)
+    tzinfo-data (1.2022.2)
       tzinfo (>= 1.0.0)
     unf (0.1.4)
       unf_ext
-    unf_ext (0.0.8.1)
+    unf_ext (0.0.8.2)
     webmock (3.5.1)
       addressable (>= 2.3.6)
       crack (>= 0.3.2)
diff --git a/VERSION b/VERSION
index d7f1518..867e524 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-1.1.12
\ No newline at end of file
+1.2.0
\ No newline at end of file
diff --git a/docker/Gemfile b/docker/Gemfile
index 934478b..3d32316 100644
--- a/docker/Gemfile
+++ b/docker/Gemfile
@@ -3,16 +3,16 @@ source 'https://rubygems.org'
 # This is separate gemfile for building docker image that has all plugins 
 # for kubernetes log collection agent
 # List all required gems here and install via bundler to resolve dependencies
-gem "fluentd", ">=1.14.2"
+gem "fluentd", ">=1.15.0"
 gem "fluent-plugin-prometheus", ">=2.0"
 gem "fluent-plugin-record-modifier", "=2.1.0"
 gem "fluent-plugin-jq", "=0.5.1"
-gem "oj", "=3.10.18"
-gem 'multi_json', '=1.14.1'
+gem "oj", "~> 3.10"
+gem 'multi_json', '~> 1.14'
 gem 'bigdecimal', '=3.0.0'
 gem 'kubeclient', '=4.9.3'
 gem 'http_parser.rb', '=0.8.0'
 gem 'rack', '>= 2.2.3.1'
 
-gem "fluent-plugin-splunk-hec", ">= 1.2.5"
+gem "fluent-plugin-splunk-hec", "= 1.3.0"
 gem 'fluent-plugin-kubernetes-metrics', path: 'gem/'
\ No newline at end of file
diff --git a/docker/Gemfile.lock b/docker/Gemfile.lock
index c6f37d6..5c23b67 100644
--- a/docker/Gemfile.lock
+++ b/docker/Gemfile.lock
@@ -1,18 +1,18 @@
 PATH
   remote: gem
   specs:
-    fluent-plugin-kubernetes-metrics (1.1.12)
+    fluent-plugin-kubernetes-metrics (1.2.0)
       fluentd (>= 1.9.1)
       kubeclient (~> 4.9.3)
-      multi_json (~> 1.14.1)
-      oj (~> 3.10.2)
+      multi_json (~> 1.14)
+      oj (~> 3.10)
 
 GEM
   remote: https://rubygems.org/
   specs:
-    activemodel (7.0.2.4)
-      activesupport (= 7.0.2.4)
-    activesupport (7.0.2.4)
+    activemodel (7.0.3.1)
+      activesupport (= 7.0.3.1)
+    activesupport (7.0.3.1)
       concurrent-ruby (~> 1.0, >= 1.0.2)
       i18n (>= 1.6, < 2)
       minitest (>= 5.1)
@@ -40,18 +40,18 @@ GEM
       prometheus-client (>= 2.1.0)
     fluent-plugin-record-modifier (2.1.0)
       fluentd (>= 1.0, < 2)
-    fluent-plugin-splunk-hec (1.2.13)
-      fluentd (>= 1.4)
+    fluent-plugin-splunk-hec (1.3.0)
+      fluentd (>= 1.5)
       multi_json (~> 1.13)
       net-http-persistent (~> 4.0)
       openid_connect (~> 1.1.8)
       prometheus-client (>= 2.1.0)
-    fluentd (1.14.6)
+    fluentd (1.15.1)
       bundler
       cool.io (>= 1.4.5, < 2.0.0)
       http_parser.rb (>= 0.5.1, < 0.9.0)
       msgpack (>= 1.3.1, < 2.0.0)
-      serverengine (>= 2.2.5, < 3.0.0)
+      serverengine (>= 2.3.0, < 3.0.0)
       sigdump (~> 0.2.2)
       strptime (>= 0.2.4, < 1.0.0)
       tzinfo (>= 1.0, < 3.0)
@@ -71,12 +71,13 @@ GEM
       ffi-compiler (>= 1.0, < 2.0)
     http_parser.rb (0.8.0)
     httpclient (2.8.3)
-    i18n (1.10.0)
+    i18n (1.12.0)
       concurrent-ruby (~> 1.0)
-    json-jwt (1.13.0)
+    json-jwt (1.15.2)
       activesupport (>= 4.2)
       aes_key_wrap
       bindata
+      httpclient
     jsonpath (1.1.0)
       multi_json
     kubeclient (4.9.3)
@@ -90,9 +91,9 @@ GEM
       mime-types-data (~> 3.2015)
     mime-types-data (3.2022.0105)
     mini_mime (1.1.2)
-    minitest (5.15.0)
-    msgpack (1.5.1)
-    multi_json (1.14.1)
+    minitest (5.16.2)
+    msgpack (1.5.4)
+    multi_json (1.15.0)
     net-http-persistent (4.0.1)
       connection_pool (~> 2.2)
     netrc (0.11.0)
@@ -109,8 +110,8 @@ GEM
       webfinger (>= 1.0.1)
     prometheus-client (4.0.0)
     public_suffix (4.0.7)
-    rack (2.2.3.1)
-    rack-oauth2 (1.19.0)
+    rack (2.2.4)
+    rack-oauth2 (1.21.2)
       activesupport
       attr_required
       httpclient
@@ -123,7 +124,7 @@ GEM
       http-cookie (>= 1.0.2, < 2.0)
       mime-types (>= 1.16, < 4.0)
       netrc (~> 0.8)
-    serverengine (2.2.5)
+    serverengine (2.3.0)
       sigdump (~> 0.2.2)
     sigdump (0.2.4)
     strptime (0.2.5)
@@ -131,9 +132,9 @@ GEM
       activesupport (>= 3)
       attr_required (>= 0.0.5)
       httpclient (>= 2.4)
-    tzinfo (2.0.4)
+    tzinfo (2.0.5)
       concurrent-ruby (~> 1.0)
-    tzinfo-data (1.2022.1)
+    tzinfo-data (1.2022.2)
       tzinfo (>= 1.0.0)
     unf (0.1.4)
       unf_ext
@@ -141,7 +142,7 @@ GEM
     validate_email (0.1.6)
       activemodel (>= 3.0)
       mail (>= 2.2.5)
-    validate_url (1.0.13)
+    validate_url (1.0.15)
       activemodel (>= 3.0.0)
       public_suffix
     webfinger (1.2.0)
@@ -159,12 +160,12 @@ DEPENDENCIES
   fluent-plugin-kubernetes-metrics!
   fluent-plugin-prometheus (>= 2.0)
   fluent-plugin-record-modifier (= 2.1.0)
-  fluent-plugin-splunk-hec (>= 1.2.5)
-  fluentd (>= 1.14.2)
+  fluent-plugin-splunk-hec (= 1.3.0)
+  fluentd (>= 1.15.0)
   http_parser.rb (= 0.8.0)
   kubeclient (= 4.9.3)
-  multi_json (= 1.14.1)
-  oj (= 3.10.18)
+  multi_json (~> 1.14)
+  oj (~> 3.10)
   rack (>= 2.2.3.1)
 
 BUNDLED WITH
diff --git a/fluent-plugin-kubernetes-metrics.gemspec b/fluent-plugin-kubernetes-metrics.gemspec
index 8ea51e6..9f1153a 100644
--- a/fluent-plugin-kubernetes-metrics.gemspec
+++ b/fluent-plugin-kubernetes-metrics.gemspec
@@ -26,6 +26,6 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency 'webmock', '~> 3.5.1'
   spec.add_runtime_dependency 'fluentd', '>= 1.9.1'
   spec.add_runtime_dependency 'kubeclient', '~> 4.9.3'
-  spec.add_runtime_dependency 'multi_json', '~> 1.14.1'
-  spec.add_runtime_dependency 'oj', '~> 3.10.2'
+  spec.add_runtime_dependency 'multi_json', '~> 1.14'
+  spec.add_runtime_dependency 'oj', '~> 3.10'
 end