diff --git a/src/future/postmark/PhutilPostmarkFuture.php b/src/future/postmark/PhutilPostmarkFuture.php
--- a/src/future/postmark/PhutilPostmarkFuture.php
+++ b/src/future/postmark/PhutilPostmarkFuture.php
@@ -3,6 +3,7 @@
 final class PhutilPostmarkFuture extends FutureProxy {
 
   private $future;
+  private $clientID;
   private $accessToken;
   private $method;
   private $parameters;
diff --git a/src/workingcopy/ArcanistWorkingCopyPath.php b/src/workingcopy/ArcanistWorkingCopyPath.php
--- a/src/workingcopy/ArcanistWorkingCopyPath.php
+++ b/src/workingcopy/ArcanistWorkingCopyPath.php
@@ -7,6 +7,7 @@
   private $mode;
   private $data;
   private $binary;
+  private $mimeType;
   private $dataAsLines;
   private $charMap;
   private $lineMap;