diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 5765510..df7f681 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -11,7 +11,7 @@ jobs:
       - id: versions
         run: |
           versions=$(curl -s 'https://cache.ruby-lang.org/pub/misc/ci_versions/cruby.json' | jq -c '. + ["2.6", "2.5", "2.4"]')
-          echo "::set-output name=value::${versions}"
+          echo "value=${versions}" >> $GITHUB_OUTPUT
   test:
     needs: ruby-versions
     name: build (${{ matrix.ruby }} / ${{ matrix.os }})