diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 4997853..b8395b3 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -22,5 +22,6 @@ jobs:
       uses: ruby/setup-ruby@v1
       with:
         ruby-version: ${{ matrix.ruby }}
+        bundler-cache: true
     - name: Run steep
       run: bundle exec steep check