diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 404ed51..e131f0d 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -12,11 +12,11 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        ruby: [ 'head', '3.0', '2.7', '2.6' ]
+        ruby: [ 'head', '3.1', '3.0', '2.7', '2.6' ]
         os: [ ubuntu-latest, macos-latest, windows-latest ]
         include:
           - ruby: jruby-head
-          - ruby: jruby-9.3
+          - ruby: jruby-9.4
           - ruby: truffleruby
           - ruby: truffleruby-head
     runs-on: ${{ matrix.os || 'ubuntu-latest' }}