diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 70c004f69..d4fb0fe76 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -96,7 +96,7 @@ jobs:
       max-parallel: 8
       matrix:
         operatingSystem: [ubuntu-latest, windows-latest]
-        phpVersion: ['8.1', '8.2', '8.3']
+        phpVersion: ['8.1', '8.2', '8.3', '8.4']
       fail-fast: false
     runs-on: ${{ matrix.operatingSystem }}
     name: ${{ matrix.operatingSystem }} / PHP ${{ matrix.phpVersion }}