autobuild.gemspec in autobuild-1.21.0 vs autobuild.gemspec in autobuild-1.22.0

@@ -3,10 +3,10 @@
 require 'autobuild/version'
 
 Gem::Specification.new do |s|
     s.name = "autobuild"
     s.version = Autobuild::VERSION
-    s.required_ruby_version = '>= 2.3.0'
+    s.required_ruby_version = '>= 2.5.0'
     s.authors = ["Sylvain Joyeux"]
     s.email = "[e-mail]"
     s.summary = "Library to handle build systems and import mechanisms"
     s.description = "Collection of classes to handle build systems "\
         "(CMake, autotools, ...) and import mechanisms "\