diff --git a/lib/active_merchant/connection.rb b/lib/active_merchant/connection.rb
index c2669cd4a2e..4e7d357fb77 100644
--- a/lib/active_merchant/connection.rb
+++ b/lib/active_merchant/connection.rb
@@ -18,7 +18,7 @@ class Connection
     RETRY_SAFE = false
     RUBY_184_POST_HEADERS = { 'Content-Type' => 'application/x-www-form-urlencoded' }
 
-    attr_accessor :endpoint, :open_timeout, :read_timeout, :verify_peer, :ssl_version, :ca_file, :ca_path, :pem, :pem_password, :logger, :tag, :ignore_http_status, :max_retries, :proxy_address, :proxy_port
+    attr_accessor :endpoint, :open_timeout, :read_timeout, :verify_peer, :ssl_version, :ca_file, :ca_path, :pem, :pem_password, :logger, :tag, :ignore_http_status, :max_retries, :proxy_address, :proxy_port, :proxy_user, :proxy_password
 
     if Net::HTTP.instance_methods.include?(:min_version=)
       attr_accessor :min_version
@@ -44,6 +44,8 @@ def initialize(endpoint)
       @ssl_connection = {}
       @proxy_address = :ENV
       @proxy_port = nil
+      @proxy_user = nil
+      @proxy_password = nil
     end
 
     def wiredump_device=(device)
@@ -111,7 +113,7 @@ def request(method, body, headers = {})
 
     def http
       @http ||= begin
-        http = Net::HTTP.new(endpoint.host, endpoint.port, proxy_address, proxy_port)
+        http = Net::HTTP.new(endpoint.host, endpoint.port, proxy_address, proxy_port, proxy_user, proxy_password)
         configure_debugging(http)
         configure_timeouts(http)
         configure_ssl(http)
diff --git a/lib/active_merchant/posts_data.rb b/lib/active_merchant/posts_data.rb
index ded8a8f3a70..61007399aa0 100644
--- a/lib/active_merchant/posts_data.rb
+++ b/lib/active_merchant/posts_data.rb
@@ -30,6 +30,8 @@ def self.included(base)
 
       base.class_attribute :proxy_address
       base.class_attribute :proxy_port
+      base.class_attribute :proxy_user
+      base.class_attribute :proxy_password
     end
 
     def ssl_get(endpoint, headers = {})
@@ -68,8 +70,10 @@ def raw_ssl_request(method, endpoint, data, headers = {})
 
       connection.ignore_http_status = @options[:ignore_http_status] if @options
 
-      connection.proxy_address = proxy_address
-      connection.proxy_port    = proxy_port
+      connection.proxy_address  = proxy_address
+      connection.proxy_port     = proxy_port
+      connection.proxy_user     = proxy_user
+      connection.proxy_password = proxy_password
 
       connection.request(method, data, headers)
     end
diff --git a/test/unit/connection_test.rb b/test/unit/connection_test.rb
index 338718a99b4..c6bdc1d72e4 100644
--- a/test/unit/connection_test.rb
+++ b/test/unit/connection_test.rb
@@ -27,7 +27,7 @@ def test_connection_endpoint_raises_uri_error
 
   def test_connection_passes_env_proxy_by_default
     spy = Net::HTTP.new('example.com', 443)
-    Net::HTTP.expects(:new).with('example.com', 443, :ENV, nil).returns(spy)
+    Net::HTTP.expects(:new).with('example.com', 443, :ENV, nil, nil, nil).returns(spy)
     spy.expects(:start).returns(true)
     spy.expects(:get).with('/tx.php', { 'connection' => 'close' }).returns(@ok)
     @connection.request(:get, nil, {})
@@ -36,8 +36,10 @@ def test_connection_passes_env_proxy_by_default
   def test_connection_does_pass_requested_proxy
     @connection.proxy_address = 'proxy.example.com'
     @connection.proxy_port = 8080
+    @connection.proxy_user = 'user'
+    @connection.proxy_password = 'password'
     spy = Net::HTTP.new('example.com', 443)
-    Net::HTTP.expects(:new).with('example.com', 443, 'proxy.example.com', 8080).returns(spy)
+    Net::HTTP.expects(:new).with('example.com', 443, 'proxy.example.com', 8080, 'user', 'password').returns(spy)
     spy.expects(:start).returns(true)
     spy.expects(:get).with('/tx.php', { 'connection' => 'close' }).returns(@ok)
     @connection.request(:get, nil, {})
diff --git a/test/unit/posts_data_test.rb b/test/unit/posts_data_test.rb
index 58de35f5d6c..81f5197c602 100644
--- a/test/unit/posts_data_test.rb
+++ b/test/unit/posts_data_test.rb
@@ -70,9 +70,13 @@ def test_setting_timeouts
   def test_setting_proxy_settings
     @gateway.class.proxy_address = 'http://proxy.com'
     @gateway.class.proxy_port = 1234
+    @gateway.class.proxy_user = 'user'
+    @gateway.class.proxy_password = 'password'
     ActiveMerchant::Connection.any_instance.expects(:request).returns(@ok)
     ActiveMerchant::Connection.any_instance.expects(:proxy_address=).with('http://proxy.com')
     ActiveMerchant::Connection.any_instance.expects(:proxy_port=).with(1234)
+    ActiveMerchant::Connection.any_instance.expects(:proxy_user=).with('user')
+    ActiveMerchant::Connection.any_instance.expects(:proxy_password=).with('password')
 
     assert_nothing_raised do
       @gateway.ssl_post(@url, '')