diff --git a/michel.gemspec b/michel.gemspec
index 37b4b31..d0ab246 100644
--- a/michel.gemspec
+++ b/michel.gemspec
@@ -13,6 +13,8 @@ Gem::Specification.new do |spec|
   spec.required_ruby_version = ">= 3.0.0"
 
   spec.metadata["homepage_uri"] = spec.homepage
+  spec.metadata["rubygems_mfa_required"] = "true"
+
   # spec.metadata["changelog_uri"] = "TODO: Put your gem's CHANGELOG.md URL here."
 
   # Specify which files should be added to the gem when it is released.