diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5ab1f79..9f31082 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,9 @@
+### [1.6.1] 2024-07-14
+
+**IMPROVEMENTS:**
+
+- [ISSUE-4](https://github.com/readdle/app-store-receipt-verification/issues/4): `preorder_date` field added to the App Receipt (kudos to @noemi-salaun)
+
 ### [1.6.0] 2024-04-16
 
 **IMPROVEMENTS:**
diff --git a/composer.json b/composer.json
index f410563..4fc0598 100644
--- a/composer.json
+++ b/composer.json
@@ -23,7 +23,7 @@
     "php"
   ],
   "homepage": "https://github.com/readdle/app-store-receipt-verification",
-  "version": "1.6.0",
+  "version": "1.6.1",
   "autoload": {
     "psr-4": {
       "Readdle\\AppStoreReceiptVerification\\": "src/"
diff --git a/src/PKCS7/AppStore/AppReceiptField.php b/src/PKCS7/AppStore/AppReceiptField.php
index 2057067..4787085 100644
--- a/src/PKCS7/AppStore/AppReceiptField.php
+++ b/src/PKCS7/AppStore/AppReceiptField.php
@@ -26,6 +26,7 @@ final class AppReceiptField extends AbstractField
     const TYPE__ORIGINAL_APPLICATION_VERSION = 19;
     const TYPE__EXPIRATION_DATE = 21;
     const TYPE__ORGANIZATION_DISPLAY_NAME = 23;
+    const TYPE__PREORDER_DATE = 32;
 
     protected const BINARY_TYPES = [
         self::TYPE__OPAQUE_VALUE,
@@ -40,6 +41,7 @@ final class AppReceiptField extends AbstractField
         self::TYPE__RECEIPT_CREATION_DATE,
         self::TYPE__ORIGINAL_PURCHASE_DATE,
         self::TYPE__EXPIRATION_DATE,
+        self::TYPE__PREORDER_DATE,
     ];
 
     protected const TYPE_TO_NAME = [
@@ -59,5 +61,6 @@ final class AppReceiptField extends AbstractField
         self::TYPE__ORIGINAL_APPLICATION_VERSION => 'original_application_version',
         self::TYPE__EXPIRATION_DATE => 'expiration_date',
         self::TYPE__ORGANIZATION_DISPLAY_NAME => 'organization_display_name',
+        self::TYPE__PREORDER_DATE => 'preorder_date',
     ];
 }