diff --git a/racc.gemspec b/racc.gemspec
index 7826449a..cf98f93b 100644
--- a/racc.gemspec
+++ b/racc.gemspec
@@ -89,7 +89,6 @@ DESC
     "doc/en/Overview-of-racc.md"
   ]
   s.require_paths = ["lib"]
-  s.required_rubygems_version = Gem::Requirement.new(">= 0") if s.respond_to? :required_rubygems_version=
   s.required_ruby_version = ">= 2.5"
   s.rdoc_options = ["--main", "README.rdoc"]
   s.extra_rdoc_files = [