diff --git a/.github/workflows/ruby.yml b/.github/workflows/ruby.yml
index 9f86cae8..dfe29097 100644
--- a/.github/workflows/ruby.yml
+++ b/.github/workflows/ruby.yml
@@ -26,10 +26,12 @@ jobs:
           - gemfiles/Gemfile.rails-7.1.x
           - gemfiles/Gemfile.rails-main
         exclude:
+          # Ruby 3.0 is not supported by Rails main (requires at least Ruby 3.1)
+          - ruby_version: '3.0'
+            gemfile: gemfiles/Gemfile.rails-main
           # JRuby is not supported by Rails 7.0.x
           - ruby_version: jruby
             gemfile: gemfiles/Gemfile.rails-7.0.x
-
           # JRuby is not supported by Rails main
           - ruby_version: jruby
             gemfile: gemfiles/Gemfile.rails-main