diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5f88322d..ef14e889 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Release Notes for Campaign
 
+## 2.1.15 - 2022-10-27
+### Fixed
+- Fixed a missed uninitialized typed property that was causing verification links to fail ([#338](https://github.com/putyourlightson/craft-campaign/issues/338)).
+
 ## 2.1.14 - 2022-10-25
 ### Fixed
 - Fixed a bug in which typed properties were being accessed before initialization, caused by a [breaking change](https://github.com/yiisoft/yii2/issues/19546#issuecomment-1291280606) in Yii 2.0.46.
diff --git a/composer.json b/composer.json
index 71e5848c..062d77d0 100644
--- a/composer.json
+++ b/composer.json
@@ -1,7 +1,7 @@
 {
     "name": "putyourlightson/craft-campaign",
     "description": "Send and manage email campaigns, contacts and mailing lists.",
-    "version": "2.1.14",
+    "version": "2.1.15",
     "type": "craft-plugin",
     "homepage": "https://putyourlightson.com/plugins/campaign",
     "license": "proprietary",
diff --git a/src/models/PendingContactModel.php b/src/models/PendingContactModel.php
index 54818d0e..208c1fdf 100644
--- a/src/models/PendingContactModel.php
+++ b/src/models/PendingContactModel.php
@@ -23,7 +23,7 @@ class PendingContactModel extends Model
     /**
      * @var int|null Mailing list ID
      */
-    public ?int $mailingListId;
+    public ?int $mailingListId = null;
 
     /**
      * @var string|null Source