diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 2432403..403642c 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -37,6 +37,7 @@ jobs:
       fail-fast: false
       matrix:
         ruby:
+          - '3.4'
           - '3.3'
           - '3.2'
           - '3.1'