diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index e25a92b..ebf5f37 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -20,6 +20,7 @@ jobs:
         - '2.6'
         - '2.7'
         - '3.0'
+        - '3.1'
     steps:
     - uses: actions/checkout@v2
     - name: Set up Ruby ${{ matrix.ruby-version }}
diff --git a/CHANGELOG.md b/CHANGELOG.md
index a9dad36..3aefdfe 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,11 @@
 # Changelog
 
+## 3.5.0
+
+IMPROVEMENTS:
+
+- Add Ruby 3.1 support
+
 ## 3.4.8 (December 11th, 2021)
 
 OTHER: