diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 8969d6e..708a799 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -11,7 +11,6 @@ jobs:
         rails_version:
           - "7.0"
           - "5.2"
-          - "4.2"
     runs-on: ubuntu-latest
     env:
       BUNDLE_GEMFILE: gemfiles/rails${{ matrix.rails_version }}.gemfile