diff --git a/.github/workflows/actions.yml b/.github/workflows/actions.yml
index a53435f..9af61cf 100644
--- a/.github/workflows/actions.yml
+++ b/.github/workflows/actions.yml
@@ -9,7 +9,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        ruby: [ '3.0', '3.1', '3.2', '3.3' ]
+        ruby: [ '3.0', '3.1', '3.2', '3.3', '3.4' ]
         task: [ 'spec' ]
         include:
         - ruby: '3.0' # keep in sync with rubocop.yml and gemspec