diff --git a/.github/PULL_REQUEST_TEMPLATE.md b/.github/PULL_REQUEST_TEMPLATE.md
index 6785041..b3f9d31 100644
--- a/.github/PULL_REQUEST_TEMPLATE.md
+++ b/.github/PULL_REQUEST_TEMPLATE.md
@@ -10,3 +10,6 @@
 
 - [ ] Have you added an integration test for the changes?
 - [ ] Have you built the gem locally and made queries against it successfully?
+- [ ] Did you update the changelog?
+- [ ] Did you bump the package version?
+- [ ] For breaking changes, did you plan for the release of the new SDK versions and deploy the API to production?
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 5f1b90b..849d492 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -26,5 +26,5 @@ jobs:
 
       - name: Run RSpec
         env:
-          PATCH_RUBY_API_KEY: ${{ secrets.SANDBOX_API_KEY }}
+          SANDBOX_API_KEY: ${{ secrets.SANDBOX_API_KEY }}
         run: bundle exec rspec
diff --git a/.rubocop.yml b/.rubocop.yml
index df46058..d32b2b1 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -113,7 +113,7 @@ Layout/SpaceInsideParens:
 #  EnforcedStyle: single_quotes
 
 # Detect hard tabs, no hard tabs.
-Layout/Tab:
+Layout/IndentationStyle:
   Enabled: true
 
 # Blank lines should not have any spaces.
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 53b47b7..bb8e2df 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,12 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [1.2.3] - 2020-09-28
+
+### Added
+
+- `patch_fee_cents_usd` field to `orders`
+
 ## [1.2.2] - 2020-09-18
 
 ### Added
diff --git a/Gemfile.lock b/Gemfile.lock
index 56dfdcb..1e8c94d 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,7 +1,7 @@
 PATH
   remote: .
   specs:
-    patch_ruby (1.2.2)
+    patch_ruby (1.2.3)
       json (~> 2.1, >= 2.1.0)
       typhoeus (~> 1.0, >= 1.0.1)
 
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..9162086
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,10 @@
+SHELL = /bin/bash
+
+build:
+	rubocop -a && \
+	bundle install
+
+test:
+	bundle exec rspec
+
+.PHONY: build test
\ No newline at end of file
diff --git a/README.md b/README.md
index 56dcfcb..e258cc4 100644
--- a/README.md
+++ b/README.md
@@ -38,7 +38,7 @@ require 'patch_ruby'
 
 Patch.configure do |config|
   # Configure the Patch gem with your API key here
-  config.access_token = ENV['PATCH_RUBY_API_KEY']
+  config.access_token = ENV['SANDBOX_API_KEY']
 end
 ```
 
@@ -161,7 +161,7 @@ $ bundle install
 
 Set up required environment variables:
 ```
-$ export PATCH_RUBY_API_KEY=<SANDBOX API KEY>
+$ export SANDBOX_API_KEY=<SANDBOX API KEY>
 ```
 
 Run tests:
diff --git a/lib/patch_ruby/models/order.rb b/lib/patch_ruby/models/order.rb
index 8f74da2..55b5bb1 100644
--- a/lib/patch_ruby/models/order.rb
+++ b/lib/patch_ruby/models/order.rb
@@ -26,6 +26,8 @@ class Order
 
     attr_accessor :price_cents_usd
 
+    attr_accessor :patch_fee_cents_usd
+
     attr_accessor :allocations
 
     attr_accessor :metadata
@@ -61,6 +63,7 @@ def self.attribute_map
         :'state' => :'state',
         :'allocation_state' => :'allocation_state',
         :'price_cents_usd' => :'price_cents_usd',
+        :'patch_fee_cents_usd' => :'patch_fee_cents_usd',
         :'allocations' => :'allocations',
         :'metadata' => :'metadata'
       }
@@ -75,6 +78,7 @@ def self.openapi_types
         :'state' => :'String',
         :'allocation_state' => :'String',
         :'price_cents_usd' => :'String',
+        :'patch_fee_cents_usd' => :'String',
         :'allocations' => :'Array<Allocation>',
         :'metadata' => :'Object'
       }
@@ -130,6 +134,10 @@ def initialize(attributes = {})
         self.price_cents_usd = attributes[:'price_cents_usd']
       end
 
+      if attributes.key?(:'patch_fee_cents_usd')
+        self.patch_fee_cents_usd = attributes[:'patch_fee_cents_usd']
+      end
+
       if attributes.key?(:'allocations')
         if (value = attributes[:'allocations']).is_a?(Array)
           self.allocations = value
@@ -252,6 +260,7 @@ def ==(o)
           state == o.state &&
           allocation_state == o.allocation_state &&
           price_cents_usd == o.price_cents_usd &&
+          patch_fee_cents_usd == o.patch_fee_cents_usd &&
           allocations == o.allocations &&
           metadata == o.metadata
     end
@@ -265,7 +274,7 @@ def eql?(o)
     # Calculates hash code according to all attributes.
     # @return [Integer] Hash code
     def hash
-      [id, mass_g, production, state, allocation_state, price_cents_usd, allocations, metadata].hash
+      [id, mass_g, production, state, allocation_state, price_cents_usd, patch_fee_cents_usd, allocations, metadata].hash
     end
 
     # Builds the object from hash
diff --git a/lib/patch_ruby/models/photo.rb b/lib/patch_ruby/models/photo.rb
index 9028c4b..fb9671b 100644
--- a/lib/patch_ruby/models/photo.rb
+++ b/lib/patch_ruby/models/photo.rb
@@ -65,12 +65,17 @@ def initialize(attributes = {})
     # @return Array for valid properties with the reasons
     def list_invalid_properties
       invalid_properties = Array.new
+      if @url.nil?
+        invalid_properties.push('invalid value for "url", url cannot be nil.')
+      end
+
       invalid_properties
     end
 
     # Check to see if the all the properties in the model are valid
     # @return true if the model is valid
     def valid?
+      return false if @url.nil?
       true
     end
 
diff --git a/lib/patch_ruby/version.rb b/lib/patch_ruby/version.rb
index d0708e9..d073ba8 100644
--- a/lib/patch_ruby/version.rb
+++ b/lib/patch_ruby/version.rb
@@ -11,5 +11,5 @@
 =end
 
 module Patch
-  VERSION = '1.2.2'
+  VERSION = '1.2.3'
 end
diff --git a/spec/constants.rb b/spec/constants.rb
new file mode 100644
index 0000000..4e8177e
--- /dev/null
+++ b/spec/constants.rb
@@ -0,0 +1,3 @@
+module Constants
+  BIOMASS_TEST_PROJECT_ID = "pro_test_c3a9feba769fc7a8806377266ca9ff6a"
+end
diff --git a/spec/integration/estimates_spec.rb b/spec/integration/estimates_spec.rb
index 523d0c1..caf2b9c 100644
--- a/spec/integration/estimates_spec.rb
+++ b/spec/integration/estimates_spec.rb
@@ -1,7 +1,7 @@
 RSpec.describe 'Estimates Integration' do
   before do
     Patch.configure do |config|
-      config.access_token = ENV['PATCH_RUBY_API_KEY']
+      config.access_token = ENV['SANDBOX_API_KEY']
     end
   end
 
diff --git a/spec/integration/orders_spec.rb b/spec/integration/orders_spec.rb
index 2c44fef..43a489c 100644
--- a/spec/integration/orders_spec.rb
+++ b/spec/integration/orders_spec.rb
@@ -1,7 +1,7 @@
 RSpec.describe 'Orders Integration' do
   before do
     Patch.configure do |config|
-      config.access_token = ENV['PATCH_RUBY_API_KEY']
+      config.access_token = ENV['SANDBOX_API_KEY']
     end
   end
 
@@ -26,14 +26,25 @@
   end
 
   it 'supports create with a project-id' do
-    retrieve_projects_response = Patch::Project.retrieve_projects(page: 1)
-    project_id = retrieve_projects_response.data.first.id
+    retrieve_project_response = Patch::Project.retrieve_project(
+      Constants::BIOMASS_TEST_PROJECT_ID
+    )
 
-    create_order_response = Patch::Order.create_order(mass_g: 100, project_id: project_id)
+    project_id = retrieve_project_response.data.id
+    average_price_per_tonne_cents_usd = retrieve_project_response.data.average_price_per_tonne_cents_usd
+
+    order_mass_g = 100_000
+    tonne_per_gram = 1_000_000
+
+    expected_price = (average_price_per_tonne_cents_usd.to_f / tonne_per_gram) * order_mass_g
+
+    create_order_response = Patch::Order.create_order(mass_g: order_mass_g, project_id: project_id)
 
     expect(create_order_response.success).to eq true
     expect(create_order_response.data.id).not_to be_nil
-    expect(create_order_response.data.mass_g).to eq(100)
+    expect(create_order_response.data.mass_g).to eq(order_mass_g)
+    expect(create_order_response.data.price_cents_usd.to_i).to eq(expected_price)
+    expect(create_order_response.data.patch_fee_cents_usd).not_to be_empty
   end
 
   it 'supports create with metadata' do
diff --git a/spec/integration/preferences_spec.rb b/spec/integration/preferences_spec.rb
index 8aba7ef..9307033 100644
--- a/spec/integration/preferences_spec.rb
+++ b/spec/integration/preferences_spec.rb
@@ -1,7 +1,7 @@
 RSpec.describe 'Preferences Integration' do
   before do
     Patch.configure do |config|
-      config.access_token = ENV['PATCH_RUBY_API_KEY']
+      config.access_token = ENV['SANDBOX_API_KEY']
     end
   end
 
diff --git a/spec/integration/projects_spec.rb b/spec/integration/projects_spec.rb
index e623b1d..899ae2a 100644
--- a/spec/integration/projects_spec.rb
+++ b/spec/integration/projects_spec.rb
@@ -1,6 +1,6 @@
 RSpec.describe 'Projects Integration' do
   Patch.configure do |config|
-    config.access_token = ENV['PATCH_RUBY_API_KEY']
+    config.access_token = ENV['SANDBOX_API_KEY']
   end
 
   it 'supports retrieve and list' do
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
index 6c652b6..2ed41b9 100644
--- a/spec/spec_helper.rb
+++ b/spec/spec_helper.rb
@@ -12,6 +12,7 @@
 
 # load the gem
 require 'patch_ruby'
+require 'constants'
 
 # The following  was generated by the `rspec --init` command. Conventionally, all
 # specs live under a `spec` directory, which RSpec adds to the `$LOAD_PATH`.