diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 7fd19a8a..8aebeb1f 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -18,7 +18,7 @@ jobs:
       - name: List packages
         id: list-packages
         run: |
-          nix flake show . --json | jq -rc '{checks: (.checks // {}), packages: (.packages // {})} | to_entries | map(.key as $type | .value | to_entries | map(select(.key == "x86_64-linux") | .value | to_entries | map({type: $type, key: .key})) | flatten) | flatten | "::set-output name=packages::\(.)"'
+          nix flake show . --json | jq -rc '{checks: (.checks // {}), packages: (.packages // {})} | to_entries | map(.key as $type | .value | to_entries | map(select(.key == "x86_64-linux") | .value | to_entries | map({type: $type, key: .key})) | flatten) | flatten | "packages=\(.)"' >> $GITHUB_OUTPUT
 
     outputs:
       packages: ${{ steps.list-packages.outputs.packages }}