diff --git a/.github/workflows/run-tests.yml b/.github/workflows/run-tests.yml
index eecc31b..a4de14e 100644
--- a/.github/workflows/run-tests.yml
+++ b/.github/workflows/run-tests.yml
@@ -9,7 +9,7 @@ jobs:
             fail-fast: true
             matrix:
                 os: [ubuntu-latest]
-                php: [8.3, 8.2, 8.1]
+                php: [8.4, 8.3, 8.2, 8.1]
                 stability: [prefer-lowest, prefer-stable]
 
         name: P${{ matrix.php }} - ${{ matrix.stability }} - ${{ matrix.os }}