diff --git a/.rubocop.yml b/.rubocop.yml
new file mode 100644
index 0000000..b6e7d57
--- /dev/null
+++ b/.rubocop.yml
@@ -0,0 +1,2 @@
+Documentation:
+  Enabled: false
diff --git a/.travis.yml b/.travis.yml
index c5b668e..a9a8c03 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,4 +1,4 @@
 language: ruby
 rvm:
-  - 2.1.2
+  - 2.5.1
 before_install: gem install bundler -v 1.10.2
diff --git a/lib/rspec_pacman_formatter/pacman.rb b/lib/rspec_pacman_formatter/pacman.rb
index 7f4d436..9dac581 100644
--- a/lib/rspec_pacman_formatter/pacman.rb
+++ b/lib/rspec_pacman_formatter/pacman.rb
@@ -68,7 +68,7 @@ def update_progress_line
 
     def step(character)
       @progress_line = @progress_line.sub(/#{Regexp.quote(Characters::PACMAN)}|#{Regexp.quote(Characters::PACDOT)}/, character)
-      print format("%s\r", @progress_line)
+      print "#{@progress_line}\r"
       return unless @progress_line[-1] =~ /ᗣ|\./
       @repetitions += 1
       puts
diff --git a/lib/rspec_pacman_formatter/version.rb b/lib/rspec_pacman_formatter/version.rb
index fed57c0..bab311a 100644
--- a/lib/rspec_pacman_formatter/version.rb
+++ b/lib/rspec_pacman_formatter/version.rb
@@ -1,3 +1,3 @@
 module RspecPacmanFormatter
-  VERSION = '0.1.5'.freeze
+  VERSION = '0.1.6'.freeze
 end
diff --git a/rspec_pacman_formatter.gemspec b/rspec_pacman_formatter.gemspec
index 039ab23..275d898 100644
--- a/rspec_pacman_formatter.gemspec
+++ b/rspec_pacman_formatter.gemspec
@@ -1,5 +1,4 @@
-# coding: utf-8
-lib = File.expand_path('../lib', __FILE__)
+lib = File.expand_path('lib', __dir__)
 $LOAD_PATH.unshift(lib) unless $LOAD_PATH.include?(lib)
 require 'rspec_pacman_formatter/version'
 
@@ -19,8 +18,8 @@ Gem::Specification.new do |spec|
   spec.executables   = spec.files.grep(%r{^exe/}) { |f| File.basename(f) }
   spec.require_paths = ['lib']
 
-  spec.add_dependency 'rspec'
   spec.add_dependency 'colorize'
+  spec.add_dependency 'rspec'
   spec.add_development_dependency 'bundler', '~> 1.10'
   spec.add_development_dependency 'rake', '~> 10.0'
 end
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
index 527d3dd..e4a29e7 100644
--- a/spec/spec_helper.rb
+++ b/spec/spec_helper.rb
@@ -1,2 +1,2 @@
-$LOAD_PATH.unshift File.expand_path('../../lib', __FILE__)
+$LOAD_PATH.unshift File.expand_path('../lib', __dir__)
 require 'rspec_pacman_formatter'