diff --git a/.github/workflows/ruby.yml b/.github/workflows/ruby.yml
index a375f704..7e55c720 100644
--- a/.github/workflows/ruby.yml
+++ b/.github/workflows/ruby.yml
@@ -20,7 +20,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        ruby-version: ['2.3', '2.7', '3.0', '3.1', '3.2']
+        ruby-version: ['3.1', '3.2']
         os: [ubuntu-latest, macos-latest] # , windows-latest
     runs-on: ${{ matrix.os }}
     steps:
diff --git a/ext/iodine/extconf.rb b/ext/iodine/extconf.rb
index e7d0417c..d0e21634 100644
--- a/ext/iodine/extconf.rb
+++ b/ext/iodine/extconf.rb
@@ -107,4 +107,4 @@ def iodine_test_polling_support
   end
 end
 
-create_makefile 'iodine/iodine_ext'
+create_makefile 'iodine/iodine'