diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 3ee0a95..90569bc 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -12,7 +12,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        ruby: [ "3.2" ]
+        ruby: [ "3.2", "3.3" ]
     env:
       NOTIFY_APP_NAME: "ChatNotifier"
       NOTIFY_SLACK_WEBHOOK_URL: ${{ secrets.SLACK_WEBHOOK_URL }}
@@ -22,7 +22,7 @@ jobs:
       CC_TEST_REPORTER_ID: ${{secrets.CC_TEST_REPORTER_ID}}
     name: Ruby ${{ matrix.ruby }}
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Set up Ruby
       uses: ruby/setup-ruby@v1
       with:
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9114b3a..60d3224 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [0.2.2] - Unreleased
 
+### Added
+
+- Test on ruby 3.3
+
 ## [0.2.1] - 2024-07-01
 
 ### Added