diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9f52ed6..5be52e3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -51,6 +51,7 @@ Updates should follow the [Keep a CHANGELOG](http://keepachangelog.com/) princip
 - Add `EnvelopeTemplate.defaultTimestampDocuments` property
 - Deprecate `EnvelopeProperties.timestampDocuments` in favor of `EnvelopeProperties.defaultTimestampDocuments`
 - Deprecate `EnvelopeTemplate.timestampDocuments` in favor of `EnvelopeTemplate.defaultTimestampDocuments`
+- Add `Envelope.withdrawalDeadline` property
 
 ## [2.11.0] - 2025-11-12
 ### Deprecated
diff --git a/src/Resource/Envelope.php b/src/Resource/Envelope.php
index a0f1399..2fd32c9 100644
--- a/src/Resource/Envelope.php
+++ b/src/Resource/Envelope.php
@@ -96,4 +96,6 @@ class Envelope extends BaseResource
     public bool $sentWithSignatureScenarios;
 
     public EnvelopeCategory $category;
+
+    public ?DateTime $withdrawalDeadline;
 }