diff --git a/resources/sql/patches/20130925.xpolicy.sql b/resources/sql/patches/20130925.xpolicy.sql
new file mode 100644
index 0000000000..374a67543f
--- /dev/null
+++ b/resources/sql/patches/20130925.xpolicy.sql
@@ -0,0 +1,17 @@
+ALTER TABLE {$NAMESPACE}_differential.differential_revision
+  ADD viewPolicy VARCHAR(64) NOT NULL COLLATE utf8_bin;
+
+ALTER TABLE {$NAMESPACE}_differential.differential_revision
+  ADD editPolicy VARCHAR(64) NOT NULL COLLATE utf8_bin;
+
+UPDATE {$NAMESPACE}_differential.differential_revision
+  SET viewPolicy = 'users' WHERE viewPolicy = '';
+
+UPDATE {$NAMESPACE}_differential.differential_revision
+  SET editPolicy = 'users' WHERE editPolicy = '';
+
+ALTER TABLE {$NAMESPACE}_differential.differential_revision
+  ADD repositoryPHID VARCHAR(64) COLLATE utf8_bin;
+
+ALTER TABLE {$NAMESPACE}_differential.differential_revision
+  ADD KEY (repositoryPHID);
diff --git a/src/applications/differential/storage/DifferentialRevision.php b/src/applications/differential/storage/DifferentialRevision.php
index 9f438e6b1f..ee98cc5dc0 100644
--- a/src/applications/differential/storage/DifferentialRevision.php
+++ b/src/applications/differential/storage/DifferentialRevision.php
@@ -25,6 +25,9 @@ final class DifferentialRevision extends DifferentialDAO
   protected $mailKey;
   protected $branchName;
   protected $arcanistProjectPHID;
+  protected $repositoryPHID;
+  protected $viewPolicy = PhabricatorPolicies::POLICY_USER;
+  protected $editPolicy = PhabricatorPolicies::POLICY_USER;
 
   private $relationships = self::ATTACHABLE;
   private $commits = self::ATTACHABLE;
diff --git a/src/infrastructure/storage/patch/PhabricatorBuiltinPatchList.php b/src/infrastructure/storage/patch/PhabricatorBuiltinPatchList.php
index c748409609..006fa1d4c5 100644
--- a/src/infrastructure/storage/patch/PhabricatorBuiltinPatchList.php
+++ b/src/infrastructure/storage/patch/PhabricatorBuiltinPatchList.php
@@ -1632,6 +1632,10 @@ final class PhabricatorBuiltinPatchList extends PhabricatorSQLPatchList {
         'type' => 'sql',
         'name' => $this->getPatchPath('20130925.mpolicy.sql'),
       ),
+      '20130925.xpolicy.sql' => array(
+        'type' => 'sql',
+        'name' => $this->getPatchPath('20130925.xpolicy.sql'),
+      ),
     );
   }
 }