diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index b154ff64..4788e0c6 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -20,6 +20,8 @@ jobs:
           - "3.1"
           - "3.2"
           - "3.3"
+          - "3.4"
+          - "4.0"
         prawn:
           - "2.4"
           - "2.5"