diff --git a/.github/workflows/build-multiarch.yaml b/.github/workflows/build-multiarch.yaml
index 55f115f..8a13791 100644
--- a/.github/workflows/build-multiarch.yaml
+++ b/.github/workflows/build-multiarch.yaml
@@ -35,7 +35,7 @@ jobs:
       - id: set-matrix
         run: |
           echo "matrix=$(jq -c . < build-matrix.json)" >> $GITHUB_OUTPUT
-          echo "matrix_versions=$(jq -c .version[] < build-matrix.json)" >> $GITHUB_OUTPUT
+          echo "matrix_versions=$(jq -c .version < build-matrix.json)" >> $GITHUB_OUTPUT
 
   build_and_push_image:
     name: Build ruby_${{ join(matrix.version.rubyver, '.') }} for ${{ matrix.arch }} and push to GHCR