diff --git a/lib/puppet/pops.rb b/lib/puppet/pops.rb
index 692a4e025..a2a7428b0 100644
--- a/lib/puppet/pops.rb
+++ b/lib/puppet/pops.rb
@@ -1,127 +1,131 @@
 module Puppet
   # The Pops language system. This includes the parser, evaluator, AST model, and
   # Binder.
   #
   # @todo Explain how a user should use this to parse and evaluate the puppet
   #   language.
   #
   # @note Warning: Pops is still considered experimental, as such the API may
   #   change at any time.
   #
   # @api public
   module Pops
     require 'puppet/pops/patterns'
     require 'puppet/pops/utils'
 
     require 'puppet/pops/adaptable'
     require 'puppet/pops/adapters'
 
     require 'puppet/pops/visitable'
     require 'puppet/pops/visitor'
 
     require 'puppet/pops/containment'
 
     require 'puppet/pops/issues'
     require 'puppet/pops/semantic_error'
     require 'puppet/pops/label_provider'
     require 'puppet/pops/validation'
     require 'puppet/pops/issue_reporter'
 
     require 'puppet/pops/model/model'
 
     # (the Types module initializes itself)
     require 'puppet/pops/types/types'
     require 'puppet/pops/types/type_calculator'
     require 'puppet/pops/types/type_factory'
     require 'puppet/pops/types/type_parser'
     require 'puppet/pops/types/class_loader'
     require 'puppet/pops/types/enumeration'
 
 
     module Model
       require 'puppet/pops/model/tree_dumper'
       require 'puppet/pops/model/ast_transformer'
       require 'puppet/pops/model/ast_tree_dumper'
       require 'puppet/pops/model/factory'
       require 'puppet/pops/model/model_tree_dumper'
       require 'puppet/pops/model/model_label_provider'
     end
 
     module Binder
       module SchemeHandler
         # the handlers are auto loaded via bindings
       end
       module Producers
         require 'puppet/pops/binder/producers'
       end
 
       require 'puppet/pops/binder/binder'
       require 'puppet/pops/binder/bindings_model'
       require 'puppet/pops/binder/binder_issues'
       require 'puppet/pops/binder/bindings_checker'
       require 'puppet/pops/binder/bindings_factory'
       require 'puppet/pops/binder/bindings_label_provider'
       require 'puppet/pops/binder/bindings_validator_factory'
       require 'puppet/pops/binder/injector_entry'
       require 'puppet/pops/binder/key_factory'
       require 'puppet/pops/binder/injector'
       require 'puppet/pops/binder/bindings_composer'
       require 'puppet/pops/binder/bindings_model_dumper'
       require 'puppet/pops/binder/system_bindings'
       require 'puppet/pops/binder/bindings_loader'
       require 'puppet/pops/binder/lookup'
 
       module Config
         require 'puppet/pops/binder/config/binder_config'
         require 'puppet/pops/binder/config/binder_config_checker'
         require 'puppet/pops/binder/config/issues'
         require 'puppet/pops/binder/config/diagnostic_producer'
       end
     end
 
     module Parser
       require 'puppet/pops/parser/eparser'
       require 'puppet/pops/parser/parser_support'
       require 'puppet/pops/parser/locator'
       require 'puppet/pops/parser/locatable'
       require 'puppet/pops/parser/lexer2'
       require 'puppet/pops/parser/evaluating_parser'
       require 'puppet/pops/parser/epp_parser'
     end
 
     module Validation
       require 'puppet/pops/validation/checker4_0'
       require 'puppet/pops/validation/validator_factory_4_0'
     end
 
     module Evaluator
       require 'puppet/pops/evaluator/callable_signature'
       require 'puppet/pops/evaluator/runtime3_converter'
       require 'puppet/pops/evaluator/runtime3_support'
       require 'puppet/pops/evaluator/evaluator_impl'
       require 'puppet/pops/evaluator/epp_evaluator'
       require 'puppet/pops/evaluator/callable_mismatch_describer'
       require 'puppet/pops/evaluator/collector_transformer'
       require 'puppet/pops/evaluator/puppet_proc'
       module Collectors
         require 'puppet/pops/evaluator/collectors/abstract_collector'
         require 'puppet/pops/evaluator/collectors/fixed_set_collector'
         require 'puppet/pops/evaluator/collectors/catalog_collector'
         require 'puppet/pops/evaluator/collectors/exported_collector'
       end
     end
 
     # Subsystem for puppet functions defined in ruby.
     #
     # @api public
     module Functions
       require 'puppet/pops/functions/function'
       require 'puppet/pops/functions/dispatch'
       require 'puppet/pops/functions/dispatcher'
     end
+
+    module Migration
+      require 'puppet/pops/migration/migration_checker'
+    end
   end
 
   require 'puppet/parser/ast/pops_bridge'
   require 'puppet/bindings'
   require 'puppet/functions'
 end