diff --git a/db/migrate/20131118094629_change_versions_published.rb b/db/migrate/20131118094629_change_versions_published.rb
index dc8deb4..457fefd 100644
--- a/db/migrate/20131118094629_change_versions_published.rb
+++ b/db/migrate/20131118094629_change_versions_published.rb
@@ -1,5 +1,14 @@
 class ChangeVersionsPublished < ActiveRecord::Migration
   def change
-  	change_column :versions, :published, :boolean
+    add_column :versions, :published_tmp, :boolean
+
+    Version.reset_column_information # make the new column available to model methods
+    Version.all.each do |v|
+      v.published_tmp = v.published == 't' ? true : false
+      v.save
+    end
+
+    remove_column :versions, :published
+    rename_column :versions, :published_tmp, :published
   end
 end