diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 74e671e..90b1e48 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -7,7 +7,7 @@ jobs:
         strategy:
             fail-fast: false
             matrix:
-                php: [7.4, 8.0, 8.1, 8.2, 8.3, 8.4, 8.5]
+                php: ['7.4', '8.0', '8.1', '8.2', '8.3', '8.4', '8.5']
                 os: [ubuntu-latest, windows-latest, macos-latest]
         runs-on: ${{ matrix.os }}
         steps: