metanorma-iho.gemspec in metanorma-iho-0.3.4 vs metanorma-iho.gemspec in metanorma-iho-0.3.5

@@ -22,10 +22,10 @@
     f.match(%r{^(test|spec|features)/})
   end
   spec.bindir        = "exe"
   spec.executables   = spec.files.grep(%r{^exe/}) { |f| File.basename(f) }
   spec.require_paths = ["lib"]
-  spec.required_ruby_version = Gem::Requirement.new(">= 2.4.0")
+  spec.required_ruby_version = Gem::Requirement.new(">= 2.5.0")
 
   spec.add_dependency "htmlentities", "~> 4.3.4"
   spec.add_dependency "metanorma-generic", "~> 1.10.0"
 
   spec.add_development_dependency "byebug", "~> 9.1"