diff --git a/HISTORY.md b/HISTORY.md
index f17e3ffd..cc5f16be 100644
--- a/HISTORY.md
+++ b/HISTORY.md
@@ -30,6 +30,9 @@ The following were removed as `fields` since their sublist class is not yet impl
 * Add `update` action to `File` records (#544)
 * Expose `errors` after calls to `delete` action (#545)
 * Add `update_list` action where missing on supported item records (#546)
+* Add `proxy` attribute to `NetSuite::Configuration` to set a proxy used by the savon client (#547)
+
+### Fixed
 * Ignore `after_submit_failed` status details (>= 2018.2) when collating errors in add action (#550)
 * Add `NullFieldList` to `SalesOrder` (#552)
 * Add thread safety to NetSuite configuration and utilities (#549)
diff --git a/lib/netsuite/configuration.rb b/lib/netsuite/configuration.rb
index 0eaf0ae6..85b36210 100644
--- a/lib/netsuite/configuration.rb
+++ b/lib/netsuite/configuration.rb
@@ -31,8 +31,8 @@ def connection(params={}, credentials={}, soap_header_extra_info={})
         logger: logger,
         log_level: log_level,
         log: !silent, # turn off logging entirely if configured
-        proxy: proxy,
       }.update(params))
+      client.globals.proxy(proxy) if proxy
       cache_wsdl(client)
       return client
     end
diff --git a/spec/netsuite/configuration_spec.rb b/spec/netsuite/configuration_spec.rb
index 04e06094..9d5f9ee8 100644
--- a/spec/netsuite/configuration_spec.rb
+++ b/spec/netsuite/configuration_spec.rb
@@ -519,13 +519,21 @@
       expect(config.proxy).to be_nil
     end
 
+    it 'does not pass in nil proxy to savon' do
+      connection = config.connection
+
+      expect(connection.globals.include?(:proxy)).to eql(false)
+    end
+
     it 'can be set with proxy=' do
       config.proxy = "https://my-proxy"
 
       expect(config.proxy).to eql("https://my-proxy")
 
       # ensure no exception is raised
-      config.connection
+      connection = config.connection
+
+      expect(connection.globals.include?(:proxy)).to eql(true)
     end
 
     it 'can be set with proxy(value)' do