Commit 9495682

@@ -1,5 +1,5 @@
 language: ruby
 rvm:
-  - 2.3.6
-  - 2.4.3
-  - 2.5.0
+  - 2.3.8
+  - 2.4.5
+  - 2.5.3

@@ -20,7 +20,7 @@ Gem::Specification.new do |spec|
   spec.executables   = spec.files.grep(%r{^exe/}) { |f| File.basename(f) }
   spec.test_files    = spec.files.grep(%r{^(test|spec|features)/})
   spec.require_paths = ["lib"]
-  spec.required_ruby_version = "~> 2.5"
+  spec.required_ruby_version = "~> 2.0"
 
   spec.add_dependency "rotp", "~> 3.3"
   spec.add_dependency "rqrcode", "~> 0.10"