diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 8ce095f..97a2562 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -24,6 +24,9 @@ jobs:
           - operating-system: ubuntu-latest
             php: 8.3
             phpunit: 9
+          - operating-system: ubuntu-latest
+            php: 8.4
+            phpunit: 9
           ## We used to test here, but we were forced to switch to newer actions.
           ## But these actions don't seem to run on Windows...
           #- operating-system: windows-2019