diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index d39d67c..509f13f 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -21,6 +21,7 @@ jobs:
         - '3.0'
         - '3.1'
         - '3.2'
+        - '3.3'
     steps:
     - uses: actions/checkout@v4
     - name: Set up Ruby ${{ matrix.ruby-version }}
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8d8d383..c20ca48 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,15 @@
 # Changelog
 
+## 3.10.0
+
+IMPROVEMENTS:
+
+- add Ruby 3.3 support
+
+OTHER:
+
+- update base of Docker image to Alpine 3.19.0 (from 3.18.3 before)
+
 ## 3.9.2 (August 10th, 2023)
 
 OTHER: