diff --git a/.github/workflows/ruby.yml b/.github/workflows/ruby.yml
index bf3542f..18e3664 100644
--- a/.github/workflows/ruby.yml
+++ b/.github/workflows/ruby.yml
@@ -6,7 +6,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ ubuntu-latest ]
-        ruby: [ '2.6', '2.7', '3.0', '3.1', '3.2' ]
+        ruby: [ '3.0', '3.1', '3.2', '3.3' ]
     runs-on: ${{ matrix.os }}
     steps:
     - uses: actions/checkout@v3