diff --git a/rswag-ui/lib/generators/rswag/ui/install/templates/rswag-ui.rb b/rswag-ui/lib/generators/rswag/ui/install/templates/rswag-ui.rb
index 084a512..b39e2f9 100644
--- a/rswag-ui/lib/generators/rswag/ui/install/templates/rswag-ui.rb
+++ b/rswag-ui/lib/generators/rswag/ui/install/templates/rswag-ui.rb
@@ -7,4 +7,8 @@ Rswag::Ui.configure do |c|
   # then the list below should correspond to the relative paths for those endpoints
 
   c.swagger_endpoint '/api-docs/v1/swagger.json', 'API V1 Docs'
+
+  # Add Basic Auth in case your API is private
+  # c.basic_auth_enabled = true
+  # c.basic_auth_credentials 'username', 'password'
 end
diff --git a/rswag-ui/lib/rswag/ui/configuration.rb b/rswag-ui/lib/rswag/ui/configuration.rb
index 5f33c2c..ae06434 100644
--- a/rswag-ui/lib/rswag/ui/configuration.rb
+++ b/rswag-ui/lib/rswag/ui/configuration.rb
@@ -4,6 +4,7 @@ module Rswag
   module Ui
     class Configuration
       attr_reader :template_locations
+      attr_accessor :basic_auth_enabled
       attr_accessor :config_object
       attr_accessor :oauth_config_object
       attr_reader :assets_root
@@ -20,6 +21,7 @@ module Rswag
         @assets_root = File.expand_path('../../../../node_modules/swagger-ui-dist', __FILE__)
         @config_object = {}
         @oauth_config_object = {}
+        @basic_auth_enabled = false
       end
 
       def swagger_endpoint(url, name)
@@ -27,9 +29,15 @@ module Rswag
         @config_object[:urls] << { url: url, name: name }
       end
 
+      def basic_auth_credentials(username, password)
+        @config_object[:basic_auth] = { username: username, password: password }
+      end
+
+      # rubocop:disable Naming/AccessorMethodName
       def get_binding
         binding
       end
+      # rubocop:enable Naming/AccessorMethodName
     end
   end
 end
diff --git a/rswag-ui/lib/rswag/ui/engine.rb b/rswag-ui/lib/rswag/ui/engine.rb
index 78ee075..2e157e3 100644
--- a/rswag-ui/lib/rswag/ui/engine.rb
+++ b/rswag-ui/lib/rswag/ui/engine.rb
@@ -7,6 +7,13 @@ module Rswag
 
       initializer 'rswag-ui.initialize' do |app|
         middleware.use Rswag::Ui::Middleware, Rswag::Ui.config
+
+        if Rswag::Ui.config.basic_auth_enabled
+          c = Rswag::Ui.config
+          app.middleware.use ::Rack::Auth::Basic do |username, password|
+            c.config_object[:basic_auth].values == [username, password]
+          end
+        end
       end
 
       rake_tasks do