diff --git a/.github/workflows/check.yml b/.github/workflows/check.yml
index f9ebe5225..3310607b9 100644
--- a/.github/workflows/check.yml
+++ b/.github/workflows/check.yml
@@ -29,6 +29,8 @@ jobs:
           TEST_TYPE: ${{ matrix.type }}
           RUBY_VERSION: ${{ matrix.ruby }}
         run: |
+          apt-get update
+          apt-get install ca-certificates
           mkdir junit
           bundle exec parallel_rspec --prefix-output-with-test-env-number --first-is-1 -- spec/${{ matrix.type }}
       - uses: actions/upload-artifact@v3