diff --git a/docs/accounting/index.html b/docs/accounting/index.html
index 7e148067..938e36df 100644
--- a/docs/accounting/index.html
+++ b/docs/accounting/index.html
@@ -4077,7 +4077,7 @@
     "Class" : {
       "type" : "string",
       "description" : "Organisation Classes describe which plan the Xero organisation is on (e.g. DEMO, TRIAL, PREMIUM)",
-      "enum" : [ "DEMO", "TRIAL", "STARTER", "STANDARD", "PREMIUM", "PREMIUM_20", "PREMIUM_50", "PREMIUM_100", "LEDGER", "GST_CASHBOOK", "NON_GST_CASHBOOK", "ULTIMATE", "LITE", "IGNITE", "GROW", "COMPREHENSIVE" ]
+      "enum" : [ "DEMO", "TRIAL", "STARTER", "STANDARD", "PREMIUM", "PREMIUM_20", "PREMIUM_50", "PREMIUM_100", "LEDGER", "GST_CASHBOOK", "NON_GST_CASHBOOK", "ULTIMATE", "LITE", "ULTIMATE_10", "ULTIMATE_20", "ULTIMATE_50", "ULTIMATE_100", "IGNITE", "GROW", "COMPREHENSIVE" ]
     },
     "Edition" : {
       "type" : "string",
diff --git a/lib/xero-ruby/models/accounting/organisation.rb b/lib/xero-ruby/models/accounting/organisation.rb
index dabc50c0..db820d7a 100644
--- a/lib/xero-ruby/models/accounting/organisation.rb
+++ b/lib/xero-ruby/models/accounting/organisation.rb
@@ -168,6 +168,10 @@ class Organisation
     NON_GST_CASHBOOK ||= "NON_GST_CASHBOOK".freeze
     ULTIMATE ||= "ULTIMATE".freeze
     LITE ||= "LITE".freeze
+    ULTIMATE_10 ||= "ULTIMATE_10".freeze
+    ULTIMATE_20 ||= "ULTIMATE_20".freeze
+    ULTIMATE_50 ||= "ULTIMATE_50".freeze
+    ULTIMATE_100 ||= "ULTIMATE_100".freeze
     IGNITE ||= "IGNITE".freeze
     GROW ||= "GROW".freeze
     COMPREHENSIVE ||= "COMPREHENSIVE".freeze
@@ -466,7 +470,7 @@ def valid?
       return false unless sales_tax_period_validator.valid?(@sales_tax_period)
       organisation_entity_type_validator = EnumAttributeValidator.new('String', ["ACCOUNTING_PRACTICE", "COMPANY", "CHARITY", "CLUB_OR_SOCIETY", "INDIVIDUAL", "LOOK_THROUGH_COMPANY", "NOT_FOR_PROFIT", "PARTNERSHIP", "S_CORPORATION", "SELF_MANAGED_SUPERANNUATION_FUND", "SOLE_TRADER", "SUPERANNUATION_FUND", "TRUST"])
       return false unless organisation_entity_type_validator.valid?(@organisation_entity_type)
-      _class_validator = EnumAttributeValidator.new('String', ["DEMO", "TRIAL", "STARTER", "STANDARD", "PREMIUM", "PREMIUM_20", "PREMIUM_50", "PREMIUM_100", "LEDGER", "GST_CASHBOOK", "NON_GST_CASHBOOK", "ULTIMATE", "LITE", "IGNITE", "GROW", "COMPREHENSIVE"])
+      _class_validator = EnumAttributeValidator.new('String', ["DEMO", "TRIAL", "STARTER", "STANDARD", "PREMIUM", "PREMIUM_20", "PREMIUM_50", "PREMIUM_100", "LEDGER", "GST_CASHBOOK", "NON_GST_CASHBOOK", "ULTIMATE", "LITE", "ULTIMATE_10", "ULTIMATE_20", "ULTIMATE_50", "ULTIMATE_100", "IGNITE", "GROW", "COMPREHENSIVE"])
       return false unless _class_validator.valid?(@_class)
       edition_validator = EnumAttributeValidator.new('String', ["BUSINESS", "PARTNER"])
       return false unless edition_validator.valid?(@edition)
@@ -526,7 +530,7 @@ def organisation_entity_type=(organisation_entity_type)
     # Custom attribute writer method checking allowed values (enum).
     # @param [Object] _class Object to be assigned
     def _class=(_class)
-      validator = EnumAttributeValidator.new('String', ["DEMO", "TRIAL", "STARTER", "STANDARD", "PREMIUM", "PREMIUM_20", "PREMIUM_50", "PREMIUM_100", "LEDGER", "GST_CASHBOOK", "NON_GST_CASHBOOK", "ULTIMATE", "LITE", "IGNITE", "GROW", "COMPREHENSIVE"])
+      validator = EnumAttributeValidator.new('String', ["DEMO", "TRIAL", "STARTER", "STANDARD", "PREMIUM", "PREMIUM_20", "PREMIUM_50", "PREMIUM_100", "LEDGER", "GST_CASHBOOK", "NON_GST_CASHBOOK", "ULTIMATE", "LITE", "ULTIMATE_10", "ULTIMATE_20", "ULTIMATE_50", "ULTIMATE_100", "IGNITE", "GROW", "COMPREHENSIVE"])
       unless validator.valid?(_class)
         fail ArgumentError, "invalid value for \"_class\", must be one of #{validator.allowable_values}."
       end