diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 0029d84..1f1d526 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -14,7 +14,7 @@ jobs:
     strategy:
       matrix:
         ruby:
-          - '3.5.0'
+          - '3.4'
 
     steps:
       - uses: actions/checkout@v4