diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 35b8742..671c0ee 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -6,7 +6,7 @@ jobs:
     strategy:
       matrix:
         redis_server: ["4", "5", "6", "7"]
-        ruby: ["3.2", "3.3"]
+        ruby: ["3.2", "3.3", "3.4", "4.0"]
 
     name: Redis server ${{ matrix.redis_server }} - Ruby ${{ matrix.ruby }}