diff --git a/.github/workflows/ruby.yml b/.github/workflows/ruby.yml
index 62f05b6..44774cf 100644
--- a/.github/workflows/ruby.yml
+++ b/.github/workflows/ruby.yml
@@ -22,7 +22,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        ruby-version: [3.0', '3.1', '3.2']
+        ruby-version: ['3.0', '3.1', 'head']
 
     steps:
     - uses: actions/checkout@v3