diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 39cb6b876..cd83ec8ec 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -38,6 +38,10 @@ jobs:
         adapter:
           - sqlite3
           - postgresql
+        exclude:
+          - { ruby: 3.0.0, appraisal: rails_5_0 }
+          - { ruby: 3.0.0, appraisal: rails_5_1 }
+          - { ruby: 3.0.0, appraisal: rails_5_2 }
     env:
       DATABASE_ADAPTER: ${{ matrix.adapter }}
       BUNDLE_GEMFILE: gemfiles/${{ matrix.appraisal }}.gemfile