diff --git a/src/filesystem/PhutilLockException.php b/src/filesystem/PhutilLockException.php
index bbc5cc23..6361bc49 100644
--- a/src/filesystem/PhutilLockException.php
+++ b/src/filesystem/PhutilLockException.php
@@ -1,3 +1,16 @@
 <?php
 
-final class PhutilLockException extends Exception {}
+final class PhutilLockException extends Exception {
+
+  private $hint;
+
+  public function setHint($hint) {
+    $this->hint = $hint;
+    return $this;
+  }
+
+  public function getHint() {
+    return $this->hint;
+  }
+
+}