diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index aeb3171e..2499cbf2 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -13,7 +13,7 @@ jobs:
 
     strategy:
       matrix:
-        ruby-version: [3.1.2]
+        ruby-version: [3.1.2, 3.0.4, 2.7.6]
 
     steps:
       - uses: actions/checkout@v2