diff --git a/.github/workflows/ruby.yml b/.github/workflows/ruby.yml
index 1960f200..2b875a3c 100644
--- a/.github/workflows/ruby.yml
+++ b/.github/workflows/ruby.yml
@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        ruby-version: ['2.5', '2.6', '2.7']
+        ruby-version: ['2.6', '2.7']
 
     steps:
     - uses: actions/checkout@v2