diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index f8c63f4..e9f6b58 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -11,6 +11,7 @@ jobs:
     strategy:
         matrix:
           ruby: [
+            '2.7.8',
             '3.0.6',
             '3.1.4',
             '3.2.3',