diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 576659f9..597f5203 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -12,7 +12,7 @@ jobs:
     name: Ruby ${{ matrix.ruby }}
     strategy:
       matrix:
-        ruby: ["2.7", "2.6", "2.5"]
+        ruby: ["3.0","2.7", "2.6"]
     steps:
       - uses: actions/checkout@master
         with: