diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 1d89381..a34b9c0 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -31,7 +31,7 @@ jobs:
       - if: runner.os != 'Windows'
         uses: ruby/setup-ruby@v1
         with:
-          ruby-version: "3.4.10"
+          ruby-version: "4.0.5"
       - if: runner.os != 'Windows'
         run: gem install jwt --no-document
       - run: go version