diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index ff05642..2b4afc5 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -33,11 +33,13 @@ jobs:
           - 2.7
           - '3.0'
           - 3.1
+          - 3.2
+          - 3.3
           - jruby-9.2
           - jruby-9.3
 
     steps:
-    - uses: actions/checkout@v1
+    - uses: actions/checkout@v4
     - uses: ruby/setup-ruby@v1
       with:
         ruby-version: ${{ matrix.ruby }}