arbre.gemspec in arbre-1.1.1 vs arbre.gemspec in arbre-1.2.0.rc1

@@ -16,7 +16,9 @@
   s.files         = `git ls-files`.split("\n")
   s.test_files    = `git ls-files -- {test,spec,features}/*`.split("\n")
   s.executables   = `git ls-files -- bin/*`.split("\n").map{ |f| File.basename(f) }
   s.require_paths = ["lib"]
 
+  s.required_ruby_version = '>= 2.3'
+
   s.add_dependency("activesupport", ">= 3.0.0")
 end