diff --git a/minitest-retry.gemspec b/minitest-retry.gemspec
index 4243c02..7abe3d3 100644
--- a/minitest-retry.gemspec
+++ b/minitest-retry.gemspec
@@ -16,6 +16,7 @@ Gem::Specification.new do |spec|
   # Prevent pushing this gem to RubyGems.org by setting 'allowed_push_host', or
   # delete this section to allow pushing this gem to any host.
   spec.metadata['allowed_push_host'] = "https://rubygems.org"
+  spec.metadata["rubygems_mfa_required"] = "true"
 
   spec.files         = `git ls-files -z`.split("\x0").reject { |f| f.match(%r{^(test|spec|features)/}) }
   spec.bindir        = "exe"