diff --git a/.github/workflows/testing.yml b/.github/workflows/testing.yml
index 068495e..86955f6 100644
--- a/.github/workflows/testing.yml
+++ b/.github/workflows/testing.yml
@@ -19,8 +19,9 @@ jobs:
       matrix:
         ruby-version:
           - 'jruby-9.3.6.0'
+          - 'jruby-9.4.0.0'
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3
     - name: Set up Ruby
       uses: ruby/setup-ruby@v1
       with:
@@ -35,8 +36,9 @@ jobs:
       matrix:
         ruby-version:
           - 'jruby-9.3.6.0'
+          - 'jruby-9.4.0.0'
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3
     - name: Set up Ruby
       uses: ruby/setup-ruby@v1
       with: