diff --git a/.github/workflows/ruby.yml b/.github/workflows/ruby.yml
index 6440e9fd..68daa162 100644
--- a/.github/workflows/ruby.yml
+++ b/.github/workflows/ruby.yml
@@ -15,7 +15,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        ruby: ["3.4", "4.0"]
+        ruby: ["4.0"]
 
     steps:
       - uses: actions/checkout@v7