diff --git a/lib/global_id.rb b/lib/global_id.rb
index 52eea73..a7be1b5 100644
--- a/lib/global_id.rb
+++ b/lib/global_id.rb
@@ -1,9 +1,19 @@
 require 'global_id/global_id'
+require 'active_support'
 
 autoload :SignedGlobalID, 'global_id/signed_global_id'
 
 class GlobalID
-  autoload :Locator, 'global_id/locator'
-  autoload :Identification, 'global_id/identification'
-  autoload :Verifier, 'global_id/verifier'
+  extend ActiveSupport::Autoload
+
+  eager_autoload do
+    autoload :Locator
+    autoload :Identification
+    autoload :Verifier
+  end
+
+  def self.eager_load!
+    super
+    require 'global_id/signed_global_id'
+  end
 end
diff --git a/lib/global_id/railtie.rb b/lib/global_id/railtie.rb
index 88cd171..8402f10 100644
--- a/lib/global_id/railtie.rb
+++ b/lib/global_id/railtie.rb
@@ -11,6 +11,7 @@ class GlobalID
   # Set up the signed GlobalID verifier and include Active Record support.
   class Railtie < Rails::Railtie # :nodoc:
     config.global_id = ActiveSupport::OrderedOptions.new
+    config.eager_load_namespaces << GlobalID
 
     initializer 'global_id' do |app|