diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index e15d7af..287e88d 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -20,6 +20,7 @@ jobs:
           - '3.0'
           - '3.1'
           - '3.2'
+          - '3.3'
           - head
           - jruby
           - jruby-head