diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index bf8ea9d..dad9053 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -15,6 +15,8 @@ jobs:
           - "8.1"
           - "8.2"
           - "8.3"
+          - "8.4"
+          - "8.5"
         dependencies:
           - "highest"
         include: