diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 6e5d801..5321b06 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -15,6 +15,7 @@ jobs:
       matrix:
         ruby:
           - '3.2.2'
+          - '3.0.0'
 
     steps:
     - uses: actions/checkout@v4