diff --git a/.github/workflows/compatibility.yml b/.github/workflows/compatibility.yml
index a8a25b3e7..0bc0fdf99 100644
--- a/.github/workflows/compatibility.yml
+++ b/.github/workflows/compatibility.yml
@@ -35,7 +35,7 @@ jobs:
           disable-security: true
       - uses: ruby/setup-ruby@v1
         with:
-          ruby-version: 3.2
+          ruby-version: 3.3
       - name: Build and test with Rake
         run: |
           sudo apt-get update
@@ -68,7 +68,7 @@ jobs:
           disable-security: false
       - uses: ruby/setup-ruby@v1
         with:
-          ruby-version: 3.2
+          ruby-version: 3.3
       - name: Build and test with Rake
         run: |
           sudo apt-get update
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index b247ec2e0..f1396d0bc 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -18,7 +18,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        ruby: [ 2.5, 2.6, 2.7, '3.0', 3.1, 3.2, jruby-9.3 ]
+        ruby: [ 2.5, 2.6, 2.7, '3.0', 3.1, 3.2, 3.3, jruby-9.3 ]
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
@@ -52,7 +52,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        ruby: [ 2.6, 2.7, '3.0', 3.1, 3.2, jruby-9.3 ]
+        ruby: [ 2.6, 2.7, '3.0', 3.1, 3.2, 3.3, jruby-9.3 ]
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
@@ -85,7 +85,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        ruby: [ 2.5, 2.6, 2.7, '3.0', 3.1, 3.2, jruby-9.3 ]
+        ruby: [ 2.5, 2.6, 2.7, '3.0', 3.1, 3.2, 3.3, jruby-9.3 ]
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
diff --git a/.github/workflows/test-unreleased.yml b/.github/workflows/test-unreleased.yml
index 349446317..ba684e663 100644
--- a/.github/workflows/test-unreleased.yml
+++ b/.github/workflows/test-unreleased.yml
@@ -19,10 +19,10 @@ jobs:
       fail-fast: false
       matrix:
         entry:
-          - { ruby_version: '3.2', opensearch_ref: '1.x' }
-          - { ruby_version: '3.2', opensearch_ref: '2.x' }
-          - { ruby_version: '3.2', opensearch_ref: '2.0' }
-          - { ruby_version: '3.2', opensearch_ref: 'main' }
+          - { ruby_version: '3.3', opensearch_ref: '1.x' }
+          - { ruby_version: '3.3', opensearch_ref: '2.x' }
+          - { ruby_version: '3.3', opensearch_ref: '2.0' }
+          - { ruby_version: '3.3', opensearch_ref: 'main' }
 
     steps:
       - uses: ruby/setup-ruby@v1
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 32558f69d..4ad4d1362 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,7 @@ Inspired from [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 ## [Unreleased]
 ### Added
 - Added base64 gem to gemspec (#218)[https://github.com/opensearch-project/opensearch-ruby/pull/218]
+- Added support for Ruby 3.3 ([#220](https://github.com/opensearch-project/opensearch-ruby/pull/220))
 ### Changed
 ### Deprecated
 ### Removed