diff --git a/.github/workflows/ruby.yml b/.github/workflows/ruby.yml
index 602cffbe..e7bc6554 100644
--- a/.github/workflows/ruby.yml
+++ b/.github/workflows/ruby.yml
@@ -36,7 +36,7 @@ jobs:
         gemfile: [ '8.1', '8.0', '7.2', 'edge' ]
         exclude:
           - ruby-version: 3.2
-          - gemfiles: 'edge'
+          - gemfile: 'edge'
     env:
       BUNDLE_GEMFILE: gemfiles/${{ matrix.gemfile }}.gemfile
     steps: