diff --git a/.rubocop.yml b/.rubocop.yml
index a8a824c..88fa651 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -1,3 +1,8 @@
+AllCops:
+  TargetRubyVersion: 2.0
+  SuggestExtensions: false
+  NewCops: 'disable'
+
 Metrics/BlockLength:
   Exclude:
     - '*.gemspec'
@@ -11,8 +16,14 @@ Metrics/MethodLength:
   Max: 12
 
 Metrics/LineLength:
-  Max: 100
+  Max: 120
 
 Style/RedundantFreeze:
   Exclude:
     - 'lib/money/bank/currencylayer_bank.rb'
+
+Style/OptionalBooleanParameter:
+  Enabled: false
+
+Security/Open:
+  Enabled: false
diff --git a/Gemfile b/Gemfile
index b0c87b1..7f4f5e9 100644
--- a/Gemfile
+++ b/Gemfile
@@ -3,9 +3,3 @@
 source 'https://rubygems.org'
 
 gemspec
-
-group :test, :development do
-  platforms :ruby_19, :jruby_19 do
-    gem 'tins', '~> 1.6'
-  end
-end
diff --git a/lib/money/bank/currencylayer_bank.rb b/lib/money/bank/currencylayer_bank.rb
index 191ea1b..a40615a 100644
--- a/lib/money/bank/currencylayer_bank.rb
+++ b/lib/money/bank/currencylayer_bank.rb
@@ -1,4 +1,3 @@
-# encoding: UTF-8
 # frozen_string_literal: true
 
 require 'open-uri'
@@ -12,10 +11,10 @@ module RatesStore
     # Memory class
     class Memory
       # Add method to reset the build in memory store
-      # @param [Hash] rt Optional initial exchange rate data.
+      # @param [Hash] rtd Optional initial exchange rate data.
       # @return [Object] store.
-      def reset!(rt = {})
-        transaction { @index = rt }
+      def reset!(rtd = {})
+        transaction { @index = rtd }
       end
     end
   end
@@ -123,6 +122,7 @@ def update_rates(straight = false)
           currency = exchange_rate.first[3..-1]
           rate = exchange_rate.last
           next unless Money::Currency.find(currency)
+
           add_rate(source, currency, rate)
           add_rate(currency, source, 1.0 / rate)
         end
@@ -135,7 +135,7 @@ def update_rates(straight = false)
       # @param [String] to_currency Currency ISO code. ex. 'CAD'
       # @param [Numeric] rate Rate to use when exchanging currencies.
       # @return [Numeric] rate.
-      def add_rate(from_currency, to_currency, rate)
+      def add_rate(from_currency, to_currency, rate) # rubocop:disable Lint/UselessMethodDefinition
         super
       end
 
@@ -188,6 +188,7 @@ def stale?
       # @return [String] the remote API url
       def source_url
         raise NoAccessKey if access_key.nil? || access_key.empty?
+
         url = "#{currencylayer ? URL_CL : URL_AL}?source=#{source}"
         url = url.sub('http:', 'https:') if secure_connection
         url = "#{url}&access_key=#{access_key}" if currencylayer
@@ -218,9 +219,10 @@ def rates_timestamp
       # @param text [String] parsed JSON content
       # @return [String,Integer]
       def store_in_cache(text)
-        if cache.is_a?(Proc)
+        case cache
+        when Proc
           cache.call(text)
-        elsif cache.is_a?(String) || cache.is_a?(Pathname)
+        when String, Pathname
           write_to_file(text)
         end
       end
@@ -258,7 +260,7 @@ def read_from_url
       # Opens an url and reads the content
       # @return [String] unparsed JSON content
       def open_url
-        currencylayer ? URI.open(source_url).read : URI.open(source_url, apikey: access_key).read
+        currencylayer ? URI.open(source_url).read : URI.open(source_url, 'apikey' => access_key).read
       rescue OpenURI::HTTPError
         ''
       end
diff --git a/money-currencylayer-bank.gemspec b/money-currencylayer-bank.gemspec
index 26ed488..49874ca 100644
--- a/money-currencylayer-bank.gemspec
+++ b/money-currencylayer-bank.gemspec
@@ -2,7 +2,7 @@
 
 Gem::Specification.new do |s|
   s.name = 'money-currencylayer-bank'
-  s.version = '0.7.1'
+  s.version = '0.7.2'
   s.date = Time.now.utc.strftime('%Y-%m-%d')
   s.homepage = "http://github.com/phlegx/#{s.name}"
   s.authors = ['Egon Zemmer']
@@ -17,16 +17,16 @@ Gem::Specification.new do |s|
   s.license = 'MIT'
   s.test_files = Dir.glob('test/*_test.rb')
   s.require_paths = ['lib']
-  s.required_ruby_version = '>= 1.9.3'
-  s.rubygems_version = '1.3.7'
-  s.add_dependency 'money', '~> 6.7'
-  s.add_dependency 'monetize', '~> 1.4'
+  s.required_ruby_version = '>= 2.0'
+  s.required_rubygems_version = '>=1.3.7'
   s.add_dependency 'json', '>= 1.8'
+  s.add_dependency 'monetize', '~> 1.4'
+  s.add_dependency 'money', '~> 6.7'
+  s.add_development_dependency 'inch', '~>0.8'
   s.add_development_dependency 'minitest', '~> 5.8'
   s.add_development_dependency 'minitest-line', '~> 0.6'
-  s.add_development_dependency 'rr', '~> 1.1'
-  s.add_development_dependency 'rake', '~>12.0'
-  s.add_development_dependency 'timecop', '~>0.8.1'
-  s.add_development_dependency 'rubocop', '~>0.49.1'
-  s.add_development_dependency 'inch', '~>0.7.1'
+  s.add_development_dependency 'rake', '~>13.0'
+  s.add_development_dependency 'rr', '~> 3.1'
+  s.add_development_dependency 'rubocop', '~>1.36.0'
+  s.add_development_dependency 'timecop', '~>0.9.5'
 end
diff --git a/test/currencylayer_bank_test.rb b/test/currencylayer_bank_test.rb
index ea8770f..8bcb362 100644
--- a/test/currencylayer_bank_test.rb
+++ b/test/currencylayer_bank_test.rb
@@ -1,4 +1,3 @@
-# encoding: UTF-8
 # frozen_string_literal: true
 
 require File.expand_path(File.join(File.dirname(__FILE__), 'test_helper'))
@@ -81,7 +80,7 @@
     it 'should allow update after save' do
       begin
         subject.update_rates
-      rescue
+      rescue e
         assert false, 'Should allow updating after saving'
       end
     end
@@ -217,8 +216,9 @@
     end
 
     it 'should update itself with exchange rates from CurrencylayerBank' do
-      subject.rates.keys.each do |currency|
+      subject.rates.each_key do |currency|
         next unless Money::Currency.find(currency)
+
         subject.get_rate('USD', currency).must_be :>, 0
       end
     end
diff --git a/test/test_helper.rb b/test/test_helper.rb
index 708a378..c7d91e8 100644
--- a/test/test_helper.rb
+++ b/test/test_helper.rb
@@ -1,4 +1,3 @@
-# encoding: UTF-8
 # frozen_string_literal: true
 
 require 'minitest/autorun'
@@ -15,3 +14,10 @@
   raise "Please add a valid access key to file #{TEST_ACCESS_KEY_PATH} or to " \
     ' TEST_ACCESS_KEY environment'
 end
+
+# Overwrite open-uri open method for tests with data from file instead of Url.
+module URI
+  def self.open(name, *_rest, &_block)
+    Kernel.open(name)
+  end
+end