diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index d206402..990766e 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -20,6 +20,7 @@ jobs:
         - '3.1'
         - '3.2'
         - '3.3'
+        - '3.4'
     steps:
     - uses: actions/checkout@v4
     - name: Set up Ruby ${{ matrix.ruby-version }}