diff --git a/CHANGELOG.md b/CHANGELOG.md
index b42ce2a..9f52ed6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -42,9 +42,15 @@ Updates should follow the [Keep a CHANGELOG](http://keepachangelog.com/) princip
 - Add `AccountBilling.timestampsAtsa` and `AccountBilling.timestampsPostSignum` property
 - Add `Features.timestampsAtsa` and `Features.timestampsPostSignum` property
 - Add `EnvelopeProperties.timestampsEnabled` property
-- Add `EnvelopeProperties.timestampsRenewalPeriod` property
+- Add `EnvelopeProperties.defaultTimestampsRenewalPeriod` property
 - Add `Features.timestampsRenewal` property
 - Add `AccountBilling.timestampsRenewal` property
+- Add `EnvelopeDocument.timestampEnabled` and `EnvelopeDocument.timestampsRenewalPeriod` properties
+- Add `EnvelopeTemplateDocument.timestampEnabled` and `EnvelopeTemplateDocument.timestampsRenewalPeriod` properties
+- Add `EnvelopeProperties.defaultTimestampDocuments` and `EnvelopeProperties.timestampAuditLogRenewalPeriod` properties
+- Add `EnvelopeTemplate.defaultTimestampDocuments` property
+- Deprecate `EnvelopeProperties.timestampDocuments` in favor of `EnvelopeProperties.defaultTimestampDocuments`
+- Deprecate `EnvelopeTemplate.timestampDocuments` in favor of `EnvelopeTemplate.defaultTimestampDocuments`
 
 ## [2.11.0] - 2025-11-12
 ### Deprecated
diff --git a/composer.json b/composer.json
index 1ca30b1..ebb1dbf 100644
--- a/composer.json
+++ b/composer.json
@@ -45,7 +45,7 @@
     "symfony/http-client": "*"
   },
   "require-dev": {
-    "digitalcz/coding-standard": "^0.2.0",
+    "digitalcz/coding-standard": "^0.3.0",
     "nyholm/nsa": "^1.2.1",
     "nyholm/psr7": "^1.3",
     "php-http/httplug": "^2.1",
@@ -55,6 +55,7 @@
     "phpstan/phpstan-phpunit": "^1.3.2",
     "phpstan/phpstan-strict-rules": "^1.4.4",
     "phpunit/phpunit": "^9.5",
+    "slevomat/coding-standard": "^8.19.1",
     "symfony/cache": "^6.0",
     "symfony/http-client": "^6.0",
     "symfony/var-dumper": "^6.0"
diff --git a/src/Resource/EnvelopeDocument.php b/src/Resource/EnvelopeDocument.php
index f19460f..5d21111 100644
--- a/src/Resource/EnvelopeDocument.php
+++ b/src/Resource/EnvelopeDocument.php
@@ -42,4 +42,8 @@ class EnvelopeDocument extends BaseResource
     public ?DateTime $invalidatedAt = null;
 
     public bool $hasSignatures;
+
+    public bool $timestampEnabled;
+
+    public ?int $timestampsRenewalPeriod = null;
 }
diff --git a/src/Resource/EnvelopeProperties.php b/src/Resource/EnvelopeProperties.php
index 4833fa6..98ac3d5 100644
--- a/src/Resource/EnvelopeProperties.php
+++ b/src/Resource/EnvelopeProperties.php
@@ -27,6 +27,9 @@ class EnvelopeProperties extends BaseResource
 
     public bool $auditLogAvailableToAccountUsers;
 
+    public bool $defaultTimestampDocuments;
+
+    /** @deprecated Use $defaultTimestampDocuments instead */
     public bool $timestampDocuments;
 
     public bool $timestampAuditLog;
@@ -51,5 +54,7 @@ class EnvelopeProperties extends BaseResource
 
     public bool $timestampsEnabled;
 
-    public ?int $timestampsRenewalPeriod;
+    public ?int $defaultTimestampsRenewalPeriod = null;
+
+    public ?int $timestampAuditLogRenewalPeriod = null;
 }
diff --git a/src/Resource/EnvelopeTemplate.php b/src/Resource/EnvelopeTemplate.php
index e481448..df394e6 100644
--- a/src/Resource/EnvelopeTemplate.php
+++ b/src/Resource/EnvelopeTemplate.php
@@ -47,6 +47,9 @@ class EnvelopeTemplate extends BaseResource
 
     public string $channelForDownload;
 
+    public bool $defaultTimestampDocuments;
+
+    /** @deprecated Use $defaultTimestampDocuments instead */
     public bool $timestampDocuments;
 
     public bool $sendCompleted;
diff --git a/src/Resource/EnvelopeTemplateDocument.php b/src/Resource/EnvelopeTemplateDocument.php
index 30f11cf..a5c02b4 100644
--- a/src/Resource/EnvelopeTemplateDocument.php
+++ b/src/Resource/EnvelopeTemplateDocument.php
@@ -24,4 +24,8 @@ class EnvelopeTemplateDocument extends BaseResource
 
     /** @var array<string, string> */
     public array $assignments;
+
+    public bool $timestampEnabled;
+
+    public ?int $timestampsRenewalPeriod = null;
 }