diff --git a/CHANGELOG.md b/CHANGELOG.md
index efe4467f5e..d64dbb26cc 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,7 @@
 # Changelog
 
+* `#2731` Migrated serialized yaml from syck to psych
+
 ## 4.0.0.pre7
 
 * `#2449` Squash old migrations
diff --git a/db/migrate/20130612104243_reporting_migrate_serialized_yaml.rb b/db/migrate/20130612104243_reporting_migrate_serialized_yaml.rb
new file mode 100644
index 0000000000..3a2bd53abf
--- /dev/null
+++ b/db/migrate/20130612104243_reporting_migrate_serialized_yaml.rb
@@ -0,0 +1,32 @@
+#-- copyright
+# OpenProject is a project management system.
+# Copyright (C) 2011-2013 the OpenProject Foundation (OPF)
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License version 3.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+#
+# See doc/COPYRIGHT.md for more details.
+#++
+
+require Rails.root.join("db","migrate","migration_utils","yaml_migrator").to_s
+
+class ReportingMigrateSerializedYaml < ActiveRecord::Migration
+  include Migration::YamlMigrator
+
+  def up
+    migrate_yaml('cost_queries', 'serialized', 'syck', 'psych')
+  end
+
+  def down
+    migrate_yaml('cost_queries', 'serialized', 'psych', 'syck')
+  end
+end