diff --git a/.github/workflows/lint-unit.yml b/.github/workflows/lint-unit.yml
index e7593f6..a9d3fde 100644
--- a/.github/workflows/lint-unit.yml
+++ b/.github/workflows/lint-unit.yml
@@ -75,7 +75,7 @@ jobs:
       BUNDLE_WITHOUT: ${{ inputs.bundle_without }}
     strategy:
       matrix:
-        ruby: ["3.1", "3.2", "3.3", "3.4"]
+        ruby: ["3.1", "3.2", "3.3"]
     steps:
       - name: Checkout code
         uses: actions/checkout@v4