ext/extconf.rb in looksee-4.2.0 vs ext/extconf.rb in looksee-4.4.0

@@ -2,10 +2,12 @@
 extension = ruby_engine == 'ruby' ? 'mri' : ruby_engine
 
 require 'mkmf'
 $CPPFLAGS << " -DRUBY_VERSION=#{RUBY_VERSION.tr('.', '')}"
 if extension == 'mri'
-  if RUBY_VERSION >= '2.7.0'
+  if RUBY_VERSION >= '3.0.0'
+    $CPPFLAGS << " -Imri/3.0.0"
+  elsif RUBY_VERSION >= '2.7.0'
     $CPPFLAGS << " -Imri/2.7.0"
   elsif RUBY_VERSION >= '2.3.0'
     $CPPFLAGS << " -Imri/2.3.0"
   elsif RUBY_VERSION >= '2.2.0'
     $CPPFLAGS << " -Imri/2.2.0"