diff --git a/lib/pact/hal/entity.rb b/lib/pact/hal/entity.rb
index 1bee4f69..37755619 100644
--- a/lib/pact/hal/entity.rb
+++ b/lib/pact/hal/entity.rb
@@ -1,6 +1,7 @@
 require 'uri'
 require 'delegate'
 require 'pact/hal/link'
+require 'pact/errors'
 
 module Pact
   module Hal
diff --git a/lib/pact/pact_broker/fetch_pacts.rb b/lib/pact/pact_broker/fetch_pacts.rb
index 26a14261..64655519 100644
--- a/lib/pact/pact_broker/fetch_pacts.rb
+++ b/lib/pact/pact_broker/fetch_pacts.rb
@@ -1,6 +1,7 @@
 require 'pact/hal/entity'
 require 'pact/hal/http_client'
 require 'pact/provider/pact_uri'
+require 'pact/errors'
 
 module Pact
   module PactBroker
diff --git a/lib/pact/pact_broker/fetch_pending_pacts.rb b/lib/pact/pact_broker/fetch_pending_pacts.rb
index dd3459b3..579ef681 100644
--- a/lib/pact/pact_broker/fetch_pending_pacts.rb
+++ b/lib/pact/pact_broker/fetch_pending_pacts.rb
@@ -1,6 +1,7 @@
 require 'pact/hal/entity'
 require 'pact/hal/http_client'
 require 'pact/provider/pact_uri'
+require 'pact/errors'
 
 module Pact
   module PactBroker
diff --git a/lib/pact/provider/configuration/pact_verification_from_broker.rb b/lib/pact/provider/configuration/pact_verification_from_broker.rb
index 931fdd7d..c2778723 100644
--- a/lib/pact/provider/configuration/pact_verification_from_broker.rb
+++ b/lib/pact/provider/configuration/pact_verification_from_broker.rb
@@ -1,6 +1,7 @@
 require 'pact/shared/dsl'
 require 'pact/provider/world'
 require 'pact/pact_broker/fetch_pacts'
+require 'pact/errors'
 
 module Pact
   module Provider