diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index d4c98195..3c851612 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -20,12 +20,13 @@ jobs:
       fail-fast: false
       matrix:
         os:
-        - ubuntu-22.04
-        - macos-13
+        - ubuntu-latest
         - macos-14
         - windows-latest
         ruby: ${{ fromJson(needs.ruby-versions.outputs.versions) }}
         include:
+        - { os: ubuntu-24.04-arm, ruby: 3.4 }
+        - { os: macos-13, ruby: 3.4 }
         - { os: windows-latest , ruby: mswin     } # ruby/ruby windows CI
         - { os: ubuntu-latest  , ruby: jruby-9.4 } # Ruby 3.1
         - { os: macos-latest   , ruby: truffleruby-head }