diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index c722ac1c..464644eb 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -19,6 +19,7 @@ jobs:
           # Due to https://github.com/actions/runner/issues/849,
           # we have to use quotes for '3.0'
           - '3.0'
+          - 3.1
           - head
           - jruby
           - jruby-head