diff --git a/.gems b/.gems
index 9b4d24d..faf1443 100644
--- a/.gems
+++ b/.gems
@@ -1,2 +1,2 @@
 sbfaulkner-sinatra-helpers -s http://gems.github.com
-datamapper --version '>= 1.0.0'
+datamapper --version '0.10.1'
diff --git a/lib/models.rb b/lib/models.rb
index 0fee30c..1913823 100644
--- a/lib/models.rb
+++ b/lib/models.rb
@@ -1,4 +1,5 @@
 require 'rubygems'
+gem "datamapper", "0.9.11"
 require 'dm-core'
 require 'dm-validations'
 require 'dm-timestamps'
@@ -79,6 +80,7 @@ class Supplier
   
   has n, :payments, :order => ['d']
   has n, :services, { :through => :payments, :order => ['name'] }
+  has n, :directorates, { :through => :payments }
   
   before :save, :slugify