diff --git a/vendor/rails/railties/lib/tasks/databases.rake b/vendor/rails/railties/lib/tasks/databases.rake
index 22b8459..7c8f137 100644
--- a/vendor/rails/railties/lib/tasks/databases.rake
+++ b/vendor/rails/railties/lib/tasks/databases.rake
@@ -1,3 +1,14 @@
+class Rake::Task
+  def invoke_again(*args)
+    original_already_invoked = @already_invoked
+    @already_invoked = false
+    (
+      invoke(*args)
+    )
+    @already_invoked = original_already_invoked || @already_invoked
+  end
+end
+
 namespace :db do
   namespace :create do
     desc 'Create all the local databases defined in config/database.yml'
@@ -97,7 +108,7 @@ namespace :db do
   task :migrate => :environment do
     ActiveRecord::Migration.verbose = ENV["VERBOSE"] ? ENV["VERBOSE"] == "true" : true
     ActiveRecord::Migrator.migrate("db/migrate/", ENV["VERSION"] ? ENV["VERSION"].to_i : nil)
-    Rake::Task["db:schema:dump"].invoke if ActiveRecord::Base.schema_format == :ruby
+    Rake::Task["db:schema:dump"].invoke_again if ActiveRecord::Base.schema_format == :ruby
   end
 
   namespace :migrate do