diff --git a/.travis.yml b/.travis.yml
index 17f10df..5ede63f 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -2,10 +2,13 @@ language: ruby
 cache: bundler
 sudo: false
 rvm:
-  - 2.0
   - 2.1
   - 2.2
-  - 2.3.1
+  - 2.3
+  - 2.6
+  - 2.7
+  - 3.0
+  -
   - jruby-head
   - ruby-head
 matrix:
diff --git a/README.md b/README.md
index 1a6ba20..51a07fc 100644
--- a/README.md
+++ b/README.md
@@ -12,7 +12,7 @@ Currently it is implemented in Java, PHP and Ruby.
 
 ## Requirements
 
-* Ruby 2.0 or newer (and compatible Ruby VMs)
+* Ruby 2.1 or newer (and compatible Ruby VMs)
 * Any operating system able to run such a VM
 
 The following gems are required:
diff --git a/lib/steam-condenser/community/game_leaderboard.rb b/lib/steam-condenser/community/game_leaderboard.rb
index b3b60fd..2ed9f3b 100644
--- a/lib/steam-condenser/community/game_leaderboard.rb
+++ b/lib/steam-condenser/community/game_leaderboard.rb
@@ -5,6 +5,7 @@
 
 require 'multi_xml'
 
+require 'steam-condenser/community/uri'
 require 'steam-condenser/community/game_leaderboard_entry'
 require 'steam-condenser/community/steam_id'
 require 'steam-condenser/community/xml_data'
@@ -197,7 +198,7 @@ def parse_entries
     def self.load_leaderboards(app_id)
       begin
         url = "http://steamcommunity.com/stats/#{app_id}/leaderboards/?xml=1"
-        boards_data = MultiXml.parse(open(url, proxy: true)).values.first
+        boards_data = MultiXml.parse(URI.open(url, proxy: true)).values.first
       rescue
         raise SteamCondenser::Error.new 'XML data could not be parsed.', $!
       end
diff --git a/lib/steam-condenser/community/uri.rb b/lib/steam-condenser/community/uri.rb
new file mode 100644
index 0000000..827031b
--- /dev/null
+++ b/lib/steam-condenser/community/uri.rb
@@ -0,0 +1,15 @@
+require 'open-uri'
+
+module SteamCondenser::Community
+  module URI
+    if RUBY_VERSION >= '2.7.0'
+      def self.open(*args)
+        ::URI.open(*args)
+      end
+    else
+      def self.open(*args)
+        Kernel.open(*args)
+      end
+    end
+  end
+end
diff --git a/lib/steam-condenser/community/web_api.rb b/lib/steam-condenser/community/web_api.rb
index 8d3b8ea..891b280 100644
--- a/lib/steam-condenser/community/web_api.rb
+++ b/lib/steam-condenser/community/web_api.rb
@@ -4,7 +4,7 @@
 # Copyright (c) 2010-2015, Sebastian Staudt
 
 require 'multi_json'
-require 'open-uri'
+require 'steam-condenser/community/uri'
 
 require 'steam-condenser/error/web_api'
 
@@ -132,7 +132,7 @@ def self.get(format, interface, method, version = 1, params = {})
           debug_url = @@api_key.nil? ? url : url.gsub(@@api_key, 'SECRET')
           log.debug "Querying Steam Web API: #{debug_url}"
         end
-        open(url, { 'Content-Type' => 'application/x-www-form-urlencoded' , proxy: true }).read
+        URI.open(url, { 'Content-Type' => 'application/x-www-form-urlencoded' , proxy: true }).read
       rescue OpenURI::HTTPError
         status = $!.io.status[0]
         status = [status, ''] unless status.is_a? Array
diff --git a/lib/steam-condenser/community/xml_data.rb b/lib/steam-condenser/community/xml_data.rb
index 4c30bc5..2fa36d9 100644
--- a/lib/steam-condenser/community/xml_data.rb
+++ b/lib/steam-condenser/community/xml_data.rb
@@ -8,23 +8,20 @@
 require 'multi_xml'
 
 module SteamCondenser::Community
-
   # This class provides basic functionality to parse XML data
   #
   # @author Sebastian Staudt
   module XMLData
-
     # Parse the given URL as XML data using `multi_xml`
     #
     # @param [String] url The URL to parse
     # @return [Hash<String, Object>] The data parsed from the XML document
     # @raise [Error] if an error occurs while parsing the XML data
     def parse(url)
-      data = open url, proxy: true
+      data = URI.open url, proxy: true
       @xml_data = MultiXml.parse(data).values.first
-    rescue
+    rescue StandardError
       raise SteamCondenser::Error.new "XML data could not be parsed: #{$!.message}", $!
     end
-
   end
 end
diff --git a/steam-condenser.gemspec b/steam-condenser.gemspec
index 89085c8..d1395a3 100644
--- a/steam-condenser.gemspec
+++ b/steam-condenser.gemspec
@@ -15,6 +15,7 @@ Gem::Specification.new do |s|
 
   s.add_dependency 'multi_json', '~> 1.6'
   s.add_dependency 'multi_xml', '~> 0.5'
+  s.add_dependency 'rexml', '~> 3.2'
 
   s.add_development_dependency 'mocha', '~> 1.1'
   s.add_development_dependency 'rake', '~> 10.4'
diff --git a/test/steam-condenser/community/test_steam_group.rb b/test/steam-condenser/community/test_steam_group.rb
index a6b3cac..c974343 100644
--- a/test/steam-condenser/community/test_steam_group.rb
+++ b/test/steam-condenser/community/test_steam_group.rb
@@ -31,7 +31,7 @@ class TestSteamGroup < Test::Unit::TestCase
 
     should 'be able to fetch its members and properties' do
       url = fixture_io 'valve-members.xml'
-      Community::SteamGroup.any_instance.expects(:open).with('http://steamcommunity.com/gid/103582791429521412/memberslistxml?p=1', proxy: true).returns url
+      Community::URI.expects(:open).with('http://steamcommunity.com/gid/103582791429521412/memberslistxml?p=1', proxy: true).returns url
 
       group = Community::SteamGroup.new 103582791429521412
       members = group.members
@@ -69,7 +69,7 @@ class TestSteamGroup < Test::Unit::TestCase
     should 'raise an exception when parsing invalid XML' do
       error = assert_raises Error do
         url = fixture_io 'invalid.xml'
-        Community::SteamGroup.any_instance.expects(:open).with('http://steamcommunity.com/groups/valve/memberslistxml?p=1', proxy: true).returns url
+        Community::URI.expects(:open).with('http://steamcommunity.com/groups/valve/memberslistxml?p=1', proxy: true).returns url
 
         Community::SteamGroup.new 'valve'
       end
@@ -78,7 +78,7 @@ class TestSteamGroup < Test::Unit::TestCase
 
     should 'be able to parse just the member count' do
       url = fixture_io 'valve-members.xml'
-      Community::SteamGroup.any_instance.expects(:open).with('http://steamcommunity.com/groups/valve/memberslistxml?p=1', proxy: true).returns url
+      Community::URI.expects(:open).with('http://steamcommunity.com/groups/valve/memberslistxml?p=1', proxy: true).returns url
 
       group = Community::SteamGroup.new 'valve', false
       assert_equal 239, group.member_count
diff --git a/test/steam-condenser/community/test_steam_id.rb b/test/steam-condenser/community/test_steam_id.rb
index 35ddf67..72346be 100644
--- a/test/steam-condenser/community/test_steam_id.rb
+++ b/test/steam-condenser/community/test_steam_id.rb
@@ -87,7 +87,7 @@ class TestSteamId < Test::Unit::TestCase
 
     should 'be able to fetch its data' do
       url = fixture_io 'sonofthor.xml'
-      Community::SteamId.any_instance.expects(:open).with('http://steamcommunity.com/id/son_of_thor?xml=1', proxy: true).returns url
+      Community::URI.expects(:open).with('http://steamcommunity.com/id/son_of_thor?xml=1', proxy: true).returns url
 
       steam_id = Community::SteamId.new 'Son_of_Thor'
 
@@ -157,7 +157,7 @@ class TestSteamId < Test::Unit::TestCase
     should 'raise an exception when parsing invalid XML' do
       error = assert_raises Error do
         url = fixture_io 'invalid.xml'
-        Community::SteamId.any_instance.expects(:open).with('http://steamcommunity.com/id/son_of_thor?xml=1', proxy: true).returns url
+        Community::URI.expects(:open).with('http://steamcommunity.com/id/son_of_thor?xml=1', proxy: true).returns url
 
         Community::SteamId.new 'Son_of_Thor'
       end
diff --git a/test/steam-condenser/community/test_web_api.rb b/test/steam-condenser/community/test_web_api.rb
index 34b3dc7..ef62b29 100644
--- a/test/steam-condenser/community/test_web_api.rb
+++ b/test/steam-condenser/community/test_web_api.rb
@@ -59,7 +59,7 @@ class TestWebApi < Test::Unit::TestCase
 
     should 'load data from the Steam Community Web API' do
       data = mock read: 'data'
-      Community::WebApi.expects(:open).with do |url, options|
+      Community::URI.expects(:open).with do |url, options|
         options == { proxy: true, 'Content-Type' => 'application/x-www-form-urlencoded' } &&
         url.start_with?('https://api.steampowered.com/interface/method/v2/?') &&
         (url.split('?').last.split('&') & %w{test=param format=json key=0123456789ABCDEF0123456789ABCDEF}).size == 3
@@ -72,7 +72,7 @@ class TestWebApi < Test::Unit::TestCase
       Community::WebApi.api_key = nil
 
       data = mock read: 'data'
-      Community::WebApi.expects(:open).with do |url, options|
+      Community::URI.expects(:open).with do |url, options|
         options == { proxy: true, 'Content-Type' => 'application/x-www-form-urlencoded' } &&
         url.start_with?('https://api.steampowered.com/interface/method/v2/?') &&
         (url.split('?').last.split('&') & %w{test=param format=json}).size == 2
@@ -84,7 +84,7 @@ class TestWebApi < Test::Unit::TestCase
     should 'handle unauthorized access error when loading data' do
       io = mock status: [401]
       http_error = OpenURI::HTTPError.new '', io
-      Community::WebApi.expects(:open).raises http_error
+      Community::URI.expects(:open).raises http_error
 
       error = assert_raises Error::WebApi do
         Community::WebApi.get :json, 'interface', 'method', 2, test: 'param'
@@ -95,7 +95,7 @@ class TestWebApi < Test::Unit::TestCase
     should 'handle generic HTTP errors when loading data' do
       io = mock status: [[404, 'Not found']]
       http_error = OpenURI::HTTPError.new '', io
-      Community::WebApi.expects(:open).raises http_error
+      Community::URI.expects(:open).raises http_error
 
       error = assert_raises Error::WebApi do
         Community::WebApi.get :json, 'interface', 'method', 2, test: 'param'
@@ -107,7 +107,7 @@ class TestWebApi < Test::Unit::TestCase
       Community::WebApi.secure = false
 
       data = mock read: 'data'
-      Community::WebApi.expects(:open).with do |url, options|
+      Community::URI.expects(:open).with do |url, options|
         options == { proxy: true, 'Content-Type' => 'application/x-www-form-urlencoded' } &&
         url.start_with?('http://api.steampowered.com/interface/method/v2/?') &&
         (url.split('?').last.split('&') & %w{test=param format=json key=0123456789ABCDEF0123456789ABCDEF}).size == 3