diff --git a/src/__phutil_library_map__.php b/src/__phutil_library_map__.php
index 6eebb90de..e261c099a 100644
--- a/src/__phutil_library_map__.php
+++ b/src/__phutil_library_map__.php
@@ -158,6 +158,7 @@
     'ArcanistApacheLicenseLinterTestCase' => 'ArcanistArcanistLinterTestCase',
     'ArcanistArcanistLinterTestCase' => 'ArcanistLinterTestCase',
     'ArcanistBaseCommitParserTestCase' => 'ArcanistTestCase',
+    'ArcanistBaseWorkflow' => 'Phobject',
     'ArcanistBranchWorkflow' => 'ArcanistBaseWorkflow',
     'ArcanistBrowseWorkflow' => 'ArcanistBaseWorkflow',
     'ArcanistBundleTestCase' => 'ArcanistTestCase',
diff --git a/src/workflow/ArcanistBaseWorkflow.php b/src/workflow/ArcanistBaseWorkflow.php
index 37ea3f6f1..32312af2f 100644
--- a/src/workflow/ArcanistBaseWorkflow.php
+++ b/src/workflow/ArcanistBaseWorkflow.php
@@ -34,7 +34,7 @@
  * @group workflow
  * @stable
  */
-abstract class ArcanistBaseWorkflow {
+abstract class ArcanistBaseWorkflow extends Phobject {
 
   const COMMIT_DISABLE = 0;
   const COMMIT_ALLOW = 1;