diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 91fdc95d..b7a4482f 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -126,6 +126,7 @@ jobs:
     - uses: ruby/setup-ruby@v1
       env:
         RAILS_VERSION: ${{ matrix.rails_version }}
+        BUNDLER_PREFER_LOCAL: ${{ startsWith(matrix.ruby, 'jruby') }}
       with:
         ruby-version: ${{ matrix.ruby }}
         bundler-cache: true # runs 'bundle install' and caches installed gems automatically