diff --git a/.github/workflows/unsupported.yml b/.github/workflows/unsupported.yml
index b7918fc..401f1f9 100644
--- a/.github/workflows/unsupported.yml
+++ b/.github/workflows/unsupported.yml
@@ -52,8 +52,6 @@ jobs:
         uses: ruby/setup-ruby@v1
         with:
           ruby-version: "${{ matrix.ruby }}"
-          rubygems: "${{ matrix.rubygems }}"
-          bundler: "${{ matrix.bundler }}"
           bundler-cache: true
 
       - name: Run tests