diff --git a/.github/workflows/laravel.yml b/.github/workflows/laravel.yml
index b49d4ce..dcc1b4b 100644
--- a/.github/workflows/laravel.yml
+++ b/.github/workflows/laravel.yml
@@ -5,7 +5,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        runtime: [ laravel:8.0-octane, laravel:8.1-octane ]
+        runtime: [ "laravel:8.0-octane", "laravel:8.1-octane" ]
     name: "bpkg.io/${{ matrix.runtime }}"
     runs-on: ubuntu-latest
     steps: