diff --git a/easypost.gemspec b/easypost.gemspec
index a5d9c493..55593c25 100644
--- a/easypost.gemspec
+++ b/easypost.gemspec
@@ -25,7 +25,7 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency 'faraday', '~> 2.7.5' # used for integration tests
   spec.add_development_dependency 'pry', '~> 0.14'
   spec.add_development_dependency 'rake', '~> 13.0'
-  spec.add_development_dependency 'rdoc', '~> 6.5'
+  spec.add_development_dependency 'rdoc', '~> 6.9'
   spec.add_development_dependency 'rspec', '~> 3.12'
   spec.add_development_dependency 'rubocop', '~> 1.49'
   spec.add_development_dependency 'rubocop-rspec', '2.19' # pin to 2.19 because latest version doesn't support Ruby 2.6
diff --git a/lib/easypost/services/address.rb b/lib/easypost/services/address.rb
index 723e352d..4587e708 100644
--- a/lib/easypost/services/address.rb
+++ b/lib/easypost/services/address.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 class EasyPost::Services::Address < EasyPost::Services::Service
-  MODEL_CLASS = EasyPost::Models::Address
+  MODEL_CLASS = EasyPost::Models::Address # :nodoc:
 
   # Create an address.
   def create(params = {})
diff --git a/lib/easypost/services/batch.rb b/lib/easypost/services/batch.rb
index e96cf6a1..96eca3f6 100644
--- a/lib/easypost/services/batch.rb
+++ b/lib/easypost/services/batch.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 class EasyPost::Services::Batch < EasyPost::Services::Service
-  MODEL_CLASS = EasyPost::Models::Batch
+  MODEL_CLASS = EasyPost::Models::Batch # :nodoc:
 
   # Create a Batch.
   def create(params = {})
diff --git a/lib/easypost/services/carrier_account.rb b/lib/easypost/services/carrier_account.rb
index 825fd20f..36a1bd01 100644
--- a/lib/easypost/services/carrier_account.rb
+++ b/lib/easypost/services/carrier_account.rb
@@ -3,7 +3,7 @@
 class EasyPost::Services::CarrierAccount < EasyPost::Services::Service
   CUSTOM_WORKFLOW_CARRIER_TYPES = %w[FedexAccount FedexSmartpostAccount].freeze
   UPS_OAUTH_CARRIER_ACCOUNT_TYPES = %w[UpsAccount UpsMailInnovationsAccount UpsSurepostAccount].freeze
-  MODEL_CLASS = EasyPost::Models::CarrierAccount
+  MODEL_CLASS = EasyPost::Models::CarrierAccount # :nodoc:
 
   # Create a carrier account
   def create(params = {})
diff --git a/lib/easypost/services/carrier_type.rb b/lib/easypost/services/carrier_type.rb
index 6fcb5d6e..89e4640e 100644
--- a/lib/easypost/services/carrier_type.rb
+++ b/lib/easypost/services/carrier_type.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 class EasyPost::Services::CarrierType < EasyPost::Services::Service
-  MODEL_CLASS = EasyPost::Models::CarrierType
+  MODEL_CLASS = EasyPost::Models::CarrierType # :nodoc:
 
   # Retrieve all carrier types
   def all
diff --git a/lib/easypost/services/claim.rb b/lib/easypost/services/claim.rb
index bd771ff2..4d0d6e54 100644
--- a/lib/easypost/services/claim.rb
+++ b/lib/easypost/services/claim.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 class EasyPost::Services::Claim < EasyPost::Services::Service
-  MODEL_CLASS = EasyPost::Models::Claim
+  MODEL_CLASS = EasyPost::Models::Claim # :nodoc:
 
   # Create an Claim object
   def create(params = {})
diff --git a/lib/easypost/services/customs_info.rb b/lib/easypost/services/customs_info.rb
index efdedf00..96f5702c 100644
--- a/lib/easypost/services/customs_info.rb
+++ b/lib/easypost/services/customs_info.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 class EasyPost::Services::CustomsInfo < EasyPost::Services::Service
-  MODEL_CLASS = EasyPost::Models::CustomsInfo
+  MODEL_CLASS = EasyPost::Models::CustomsInfo # :nodoc:
 
   # Create a CustomsInfo object
   def create(params)
diff --git a/lib/easypost/services/customs_item.rb b/lib/easypost/services/customs_item.rb
index aa5f5042..35a3dee0 100644
--- a/lib/easypost/services/customs_item.rb
+++ b/lib/easypost/services/customs_item.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 class EasyPost::Services::CustomsItem < EasyPost::Services::Service
-  MODEL_CLASS = EasyPost::Models::CustomsItem
+  MODEL_CLASS = EasyPost::Models::CustomsItem # :nodoc:
 
   # Create a CustomsItem object
   def create(params)
diff --git a/lib/easypost/services/end_shipper.rb b/lib/easypost/services/end_shipper.rb
index a525cc89..7de6e44e 100644
--- a/lib/easypost/services/end_shipper.rb
+++ b/lib/easypost/services/end_shipper.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 class EasyPost::Services::EndShipper < EasyPost::Services::Service
-  MODEL_CLASS = EasyPost::Models::EndShipper
+  MODEL_CLASS = EasyPost::Models::EndShipper # :nodoc:
 
   # Create an EndShipper object.
   def create(params = {})
diff --git a/lib/easypost/services/event.rb b/lib/easypost/services/event.rb
index 51f12472..fc58f9ee 100644
--- a/lib/easypost/services/event.rb
+++ b/lib/easypost/services/event.rb
@@ -3,7 +3,7 @@
 require 'json'
 
 class EasyPost::Services::Event < EasyPost::Services::Service
-  MODEL_CLASS = EasyPost::Models::Event
+  MODEL_CLASS = EasyPost::Models::Event # :nodoc:
 
   # Retrieve an Event object
   def retrieve(id)
diff --git a/lib/easypost/services/insurance.rb b/lib/easypost/services/insurance.rb
index 11235df0..1a7ebc2d 100644
--- a/lib/easypost/services/insurance.rb
+++ b/lib/easypost/services/insurance.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 class EasyPost::Services::Insurance < EasyPost::Services::Service
-  MODEL_CLASS = EasyPost::Models::Insurance
+  MODEL_CLASS = EasyPost::Models::Insurance # :nodoc:
 
   # Create an Insurance object
   def create(params = {})
diff --git a/lib/easypost/services/order.rb b/lib/easypost/services/order.rb
index b61d61d5..ff109fce 100644
--- a/lib/easypost/services/order.rb
+++ b/lib/easypost/services/order.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 class EasyPost::Services::Order < EasyPost::Services::Service
-  MODEL_CLASS = EasyPost::Models::Order
+  MODEL_CLASS = EasyPost::Models::Order # :nodoc:
 
   # Create an Order object
   def create(params = {})
diff --git a/lib/easypost/services/parcel.rb b/lib/easypost/services/parcel.rb
index d4a90631..6625185e 100644
--- a/lib/easypost/services/parcel.rb
+++ b/lib/easypost/services/parcel.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 class EasyPost::Services::Parcel < EasyPost::Services::Service
-  MODEL_CLASS = EasyPost::Models::Parcel
+  MODEL_CLASS = EasyPost::Models::Parcel # :nodoc:
 
   # Create a Parcel object
   def create(params = {})
diff --git a/lib/easypost/services/pickup.rb b/lib/easypost/services/pickup.rb
index 381813b5..ecccfc03 100644
--- a/lib/easypost/services/pickup.rb
+++ b/lib/easypost/services/pickup.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 class EasyPost::Services::Pickup < EasyPost::Services::Service
-  MODEL_CLASS = EasyPost::Models::Pickup
+  MODEL_CLASS = EasyPost::Models::Pickup # :nodoc:
 
   # Create a Pickup object
   def create(params = {})
diff --git a/lib/easypost/services/referral_customer.rb b/lib/easypost/services/referral_customer.rb
index fe37d3fc..22aa5151 100644
--- a/lib/easypost/services/referral_customer.rb
+++ b/lib/easypost/services/referral_customer.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 class EasyPost::Services::ReferralCustomer < EasyPost::Services::Service
-  MODEL_CLASS = EasyPost::Models::User
+  MODEL_CLASS = EasyPost::Models::User # :nodoc:
 
   # Create a referral customer. This function requires the Partner User's API key.
   def create(params = {})
diff --git a/lib/easypost/services/refund.rb b/lib/easypost/services/refund.rb
index 4b44bb48..9d929bec 100644
--- a/lib/easypost/services/refund.rb
+++ b/lib/easypost/services/refund.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 class EasyPost::Services::Refund < EasyPost::Services::Service
-  MODEL_CLASS = EasyPost::Models::Refund
+  MODEL_CLASS = EasyPost::Models::Refund # :nodoc:
 
   # Create a Refund object
   def create(params = {})
diff --git a/lib/easypost/services/report.rb b/lib/easypost/services/report.rb
index bda57178..450ac476 100644
--- a/lib/easypost/services/report.rb
+++ b/lib/easypost/services/report.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 class EasyPost::Services::Report < EasyPost::Services::Service
-  MODEL_CLASS = EasyPost::Models::Report
+  MODEL_CLASS = EasyPost::Models::Report # :nodoc:
 
   # Create a Report
   def create(params = {})
diff --git a/lib/easypost/services/scan_form.rb b/lib/easypost/services/scan_form.rb
index 39462de5..8dc26f9c 100644
--- a/lib/easypost/services/scan_form.rb
+++ b/lib/easypost/services/scan_form.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 class EasyPost::Services::ScanForm < EasyPost::Services::Service
-  MODEL_CLASS = EasyPost::Models::ScanForm
+  MODEL_CLASS = EasyPost::Models::ScanForm # :nodoc:
 
   # Create a ScanForm.
   def create(params = {})
diff --git a/lib/easypost/services/shipment.rb b/lib/easypost/services/shipment.rb
index 177eeb0a..35ec35dd 100644
--- a/lib/easypost/services/shipment.rb
+++ b/lib/easypost/services/shipment.rb
@@ -3,7 +3,7 @@
 require 'set'
 
 class EasyPost::Services::Shipment < EasyPost::Services::Service
-  MODEL_CLASS = EasyPost::Models::Shipment
+  MODEL_CLASS = EasyPost::Models::Shipment # :nodoc:
 
   # Create a Shipment.
   def create(params = {})
diff --git a/lib/easypost/services/tracker.rb b/lib/easypost/services/tracker.rb
index e9e2e714..19ad7a84 100644
--- a/lib/easypost/services/tracker.rb
+++ b/lib/easypost/services/tracker.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 class EasyPost::Services::Tracker < EasyPost::Services::Service
-  MODEL_CLASS = EasyPost::Models::Tracker
+  MODEL_CLASS = EasyPost::Models::Tracker # :nodoc:
 
   # Create a Tracker
   def create(params = {})
diff --git a/lib/easypost/services/user.rb b/lib/easypost/services/user.rb
index 7e7a12c3..1703ec94 100644
--- a/lib/easypost/services/user.rb
+++ b/lib/easypost/services/user.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 class EasyPost::Services::User < EasyPost::Services::Service
-  MODEL_CLASS = EasyPost::Models::User
+  MODEL_CLASS = EasyPost::Models::User # :nodoc:
 
   # Create a child User.
   def create(params = {})
diff --git a/lib/easypost/services/webhook.rb b/lib/easypost/services/webhook.rb
index 626c24ac..3c910de3 100644
--- a/lib/easypost/services/webhook.rb
+++ b/lib/easypost/services/webhook.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 class EasyPost::Services::Webhook < EasyPost::Services::Service
-  MODEL_CLASS = EasyPost::Models::Webhook
+  MODEL_CLASS = EasyPost::Models::Webhook # :nodoc:
 
   # Create a Webhook.
   def create(params = {})