diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index f321ddd8..3326d19a 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -362,4 +362,6 @@ jobs:
           name: cruby-x86_64-linux-musl-gem
           path: gems
       - run: apk add build-base
+      - if: matrix.ruby == '3.0' # https://github.com/rake-compiler/rake-compiler/pull/236
+        run: gem install bundler
       - run: ./bin/test-gem-install ./gems