1 files changed, 1 insertions, 1 deletions
diff --git a/Rakefile b/Rakefile
index 46d6bfe..c5883e5 100644
--- a/Rakefile
+++ b/Rakefile
@@ -100,7 +100,7 @@ task :doc do
 end
 
 rule '.o' => ['.cpp', "mruby-#{MRUBY_VERSION}"] do |t|
-  system("g++ -D DEBUG=1 -c -std=c++17 -Imruby-#{MRUBY_VERSION}/include/ "\
+  system("g++ -D DEBUG=1 -c -std=c++20 -Imruby-#{MRUBY_VERSION}/include/ "\
          "#{t.source} -o #{t.name}")
 end