diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 59d3bc4..25de907 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -12,7 +12,7 @@ jobs:
       fail-fast: false
       matrix:
         # Due to https://github.com/actions/runner/issues/849, we should quote versions
-        ruby: ['2.7', '3.0', '3.1', '3.2', 'truffleruby-head']
+        ruby: ['2.7', '3.0', '3.1', '3.2', '3.3', 'truffleruby-head']
         rails: ['7.0', '7.1']
 
     name: Ruby ${{ matrix.ruby }}, Rails ${{ matrix.rails }}