diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 6f27014..8bf7d6b 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -15,7 +15,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        ruby-version: ['2.6', '2.7', '3.0']
+        ruby-version: ['2.7', '3.0']
 
     steps:
     - uses: actions/checkout@v2