diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index b8406a7..1fff746 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -12,6 +12,7 @@ jobs:
     strategy:
       matrix:
         php:
+          - 8.4
           - 8.3
           - 8.2
           - 8.1