diff --git a/README.md b/README.md
index a6332fbe4..91323ba4a 100644
--- a/README.md
+++ b/README.md
@@ -69,7 +69,7 @@ NetSuite.configure do
   api_version	'2012_1'
 
   # optionally specify full wsdl URL (to switch to sandbox, for example)
-  wsdl          "https://webservices.sandbox.netsuite.com/wsdl/v#{api_version}_0/netsuite.wsdl"
+  wsdl          "https://system.netsuite.com/wsdl/v#{api_version}_0/netsuite.wsdl"
 
   # if your datacenter is being switched, you'll have to manually set your wsdl location
   wsdl          "https://webservices.na2.netsuite.com/wsdl/v#{api_version}_0/netsuite.wsdl"
@@ -570,4 +570,4 @@ states.to_array.first[:get_all_response][:get_all_result][:record_list][:record]
 
 # About SuiteSync
 
-[SuiteSync, the Stripe-NetSuite integration](http://suitesync.io) uses this gem and funds the majority of it's development and maintenance.
\ No newline at end of file
+[SuiteSync, the Stripe-NetSuite integration](http://suitesync.io) uses this gem and funds the majority of it's development and maintenance.
diff --git a/lib/netsuite/configuration.rb b/lib/netsuite/configuration.rb
index ac6e3aa88..7254a9002 100644
--- a/lib/netsuite/configuration.rb
+++ b/lib/netsuite/configuration.rb
@@ -124,7 +124,7 @@ def wsdl(wsdl = nil)
       else
         attributes[:wsdl] ||= begin
           if sandbox
-            "https://webservices.sandbox.netsuite.com/wsdl/v#{api_version}_0/netsuite.wsdl"
+            "https://system.netsuite.com/wsdl/v#{api_version}_0/netsuite.wsdl"
           else
             "https://#{wsdl_domain}/wsdl/v#{api_version}_0/netsuite.wsdl"
           end
@@ -138,7 +138,7 @@ def wsdl_domain(wsdl_domain = nil)
       else
         # if sandbox, this parameter is ignored
         if sandbox
-          'webservices.sandbox.netsuite.com'
+          'system.netsuite.com'
         else
           attributes[:wsdl_domain] ||= 'webservices.netsuite.com'
         end
diff --git a/lib/netsuite/namespaces/list_emp.rb b/lib/netsuite/namespaces/list_emp.rb
index 0063eedaa..657c6cbb4 100644
--- a/lib/netsuite/namespaces/list_emp.rb
+++ b/lib/netsuite/namespaces/list_emp.rb
@@ -2,7 +2,7 @@ module NetSuite
   module Namespaces
     module ListEmp
 
-      # https://webservices.sandbox.netsuite.com/xsd/lists/v2013_2_0/employees.xsd
+      # https://system.netsuite.com/xsd/lists/v2013_2_0/employees.xsd
       def record_namespace
         'listEmp'
       end
diff --git a/lib/netsuite/namespaces/list_mkt.rb b/lib/netsuite/namespaces/list_mkt.rb
index 4e04c952b..e640fc177 100644
--- a/lib/netsuite/namespaces/list_mkt.rb
+++ b/lib/netsuite/namespaces/list_mkt.rb
@@ -2,7 +2,7 @@ module NetSuite
   module Namespaces
     module ListMkt
 
-      # https://webservices.sandbox.netsuite.com/xsd/lists/v2013_2_0/marketing.xsd
+      # https://system.netsuite.com/xsd/lists/v2013_2_0/marketing.xsd
       def record_namespace
         'listMkt'
       end
diff --git a/spec/netsuite/configuration_spec.rb b/spec/netsuite/configuration_spec.rb
index e3eaf7669..a826c6e34 100644
--- a/spec/netsuite/configuration_spec.rb
+++ b/spec/netsuite/configuration_spec.rb
@@ -355,8 +355,8 @@
     expect(config.wsdl).to include('custom.domain.com')
 
     config.sandbox = true
-    expect(config.wsdl_domain).to eq('webservices.sandbox.netsuite.com')
-    expect(config.wsdl).to include('webservices.sandbox.netsuite.com')
+    expect(config.wsdl_domain).to eq('system.netsuite.com')
+    expect(config.wsdl).to include('system.netsuite.com')
   end
 
   describe '#logger=' do