diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 48b86a0..d5e157f 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -10,7 +10,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        ruby-version: [3.0, 3.1, 3.2]
+        ruby-version: [3.0, 3.1, 3.2, 3.3]
     steps:
       - uses: actions/checkout@v4
         with: