diff --git a/lib/dotenv/rails.rb b/lib/dotenv/rails.rb
index a94442f..d0135fb 100644
--- a/lib/dotenv/rails.rb
+++ b/lib/dotenv/rails.rb
@@ -22,6 +22,13 @@ module Dotenv
   class Rails < ::Rails::Railtie
     delegate :files, :files=, :overwrite, :overwrite=, :autorestore, :autorestore=, :logger, to: "config.dotenv"
 
+    # The documented options are configured on the class, which Rails only supports through
+    # `Railtie.method_missing`. Define them explicitly so they show up in `.methods`, have a
+    # source location, and don't depend on that forwarding.
+    class << self
+      delegate :files, :files=, :overwrite, :overwrite=, :autorestore, :autorestore=, :logger, :logger=, to: :instance
+    end
+
     def initialize
       super
       config.dotenv = ActiveSupport::OrderedOptions.new.update(
diff --git a/spec/dotenv/rails_spec.rb b/spec/dotenv/rails_spec.rb
index 59fc678..469d2aa 100644
--- a/spec/dotenv/rails_spec.rb
+++ b/spec/dotenv/rails_spec.rb
@@ -74,6 +74,17 @@
     end
   end
 
+  describe "options" do
+    it "are defined on the class and delegate to the instance" do
+      expect(Dotenv::Rails.singleton_class.instance_methods).to include(
+        :files, :files=, :overwrite, :overwrite=, :autorestore, :autorestore=, :logger, :logger=
+      )
+
+      Dotenv::Rails.overwrite = true
+      expect(Dotenv::Rails.instance.overwrite).to be(true)
+    end
+  end
+
   it "watches other loaded files with Spring" do
     stub_spring(load_watcher: true)
     application.initialize!