diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index b354362..c15fec8 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -25,6 +25,7 @@ jobs:
           - '2.7'
           - '3.1'
           - '3.2'
+          - '3.3'
         action_mailer_version:
           - 5
           - 6
@@ -35,6 +36,10 @@ jobs:
         experimental:
           - false
         exclude:
+          - ruby: '3.3'
+            action_mailer_version: 5
+          - ruby: '3.3'
+            action_mailer_version: 6
           - ruby: '3.2'
             action_mailer_version: 5
           - ruby: '3.1'