lib/data_migrate/migration.rb in data_migrate-6.3.0 vs lib/data_migrate/migration.rb in data_migrate-6.4.0

@@ -12,11 +12,11 @@
 
       def table_name
         ActiveRecord::Base.table_name_prefix + "data_migrations" + ActiveRecord::Base.table_name_suffix
       end
 
-      def index_name
-        "#{table_name_prefix}unique_data_migrations#{table_name_suffix}"
+      def primary_key
+        "version"
       end
     end
 
     def initialize(name = self.class.name, version = nil)
       super(name, version)