diff --git a/src/applications/cache/management/PhabricatorCacheManagementPurgeWorkflow.php b/src/applications/cache/management/PhabricatorCacheManagementPurgeWorkflow.php
index 160fe4f5db..91ab0cf83d 100644
--- a/src/applications/cache/management/PhabricatorCacheManagementPurgeWorkflow.php
+++ b/src/applications/cache/management/PhabricatorCacheManagementPurgeWorkflow.php
@@ -1,103 +1,124 @@
 <?php
 
 final class PhabricatorCacheManagementPurgeWorkflow
   extends PhabricatorCacheManagementWorkflow {
 
   protected function didConstruct() {
     $this
       ->setName('purge')
       ->setSynopsis(pht('Drop data from caches. APC-based caches can be '.
                         'purged from the web interface.'))
       ->setArguments(
         array(
           array(
             'name'    => 'purge-all',
             'help'    => pht('Purge all caches.'),
           ),
           array(
             'name'    => 'purge-remarkup',
             'help'    => pht('Purge the remarkup cache.'),
           ),
           array(
             'name'    => 'purge-changeset',
             'help'    => pht('Purge the Differential changeset cache.'),
           ),
           array(
             'name'    => 'purge-general',
             'help'    => pht('Purge the general cache.'),
           ),
+          array(
+            'name' => 'purge-user',
+            'help' => pht('Purge the user cache.'),
+          ),
         ));
   }
 
   public function execute(PhutilArgumentParser $args) {
     $console = PhutilConsole::getConsole();
 
     $purge_all = $args->getArg('purge-all');
 
     $purge = array(
       'remarkup'  => $purge_all || $args->getArg('purge-remarkup'),
       'changeset' => $purge_all || $args->getArg('purge-changeset'),
       'general'   => $purge_all || $args->getArg('purge-general'),
+      'user' => $purge_all || $args->getArg('purge-user'),
     );
 
     if (!array_filter($purge)) {
       $list = array();
       foreach ($purge as $key => $ignored) {
         $list[] = "'--purge-".$key."'";
       }
 
       throw new PhutilArgumentUsageException(
         pht(
           "Specify which cache or caches to purge, or use '%s'. Available ".
           "caches are: %s. Use '%s' for more information.",
           '--purge-all',
           implode(', ', $list),
           '--help'));
     }
 
     if ($purge['remarkup']) {
       $console->writeOut(pht('Purging remarkup cache...'));
       $this->purgeRemarkupCache();
       $console->writeOut("%s\n", pht('Done.'));
     }
 
     if ($purge['changeset']) {
       $console->writeOut(pht('Purging changeset cache...'));
       $this->purgeChangesetCache();
       $console->writeOut("%s\n", pht('Done.'));
     }
 
     if ($purge['general']) {
       $console->writeOut(pht('Purging general cache...'));
       $this->purgeGeneralCache();
       $console->writeOut("%s\n", pht('Done.'));
     }
+
+    if ($purge['user']) {
+      $console->writeOut(pht('Purging user cache...'));
+      $this->purgeUserCache();
+      $console->writeOut("%s\n", pht('Done.'));
+    }
   }
 
   private function purgeRemarkupCache() {
     $conn_w = id(new PhabricatorMarkupCache())->establishConnection('w');
 
     queryfx(
       $conn_w,
       'TRUNCATE TABLE %T',
       id(new PhabricatorMarkupCache())->getTableName());
   }
 
   private function purgeChangesetCache() {
     $conn_w = id(new DifferentialChangeset())->establishConnection('w');
     queryfx(
       $conn_w,
       'TRUNCATE TABLE %T',
       DifferentialChangeset::TABLE_CACHE);
   }
 
   private function purgeGeneralCache() {
     $conn_w = id(new PhabricatorMarkupCache())->establishConnection('w');
 
     queryfx(
       $conn_w,
       'TRUNCATE TABLE %T',
       'cache_general');
   }
 
+  private function purgeUserCache() {
+    $table = new PhabricatorUserCache();
+    $conn_w = $table->establishConnection('w');
+
+    queryfx(
+      $conn_w,
+      'TRUNCATE TABLE %T',
+      $table->getTableName());
+  }
+
 }