diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 26bd67d..7a98325 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -23,7 +23,11 @@ jobs:
         id: hosts
         run: |
           hostnames="$(nix eval .#nixosConfigurations --apply builtins.attrNames --json)"
-          printf "hostnames=%q \n" "${hostnames}" >> "${GITHUB_OUTPUT}" # Preserve quotes
+          {
+            echo "hostnames<<EOF"
+            echo "${hostnames}"
+            echo EOF
+          } >> "${GITHUB_OUTPUT}" # Preserve quotes
 
   build:
     runs-on: ubuntu-latest