diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index d49d3443..d83d882d 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -34,6 +34,7 @@ jobs:
       fail-fast: false
       matrix:
         ruby:
+          - "3.1"
           - '3.0'
           - '2.7'
         rails: