diff --git a/CHANGELOG.md b/CHANGELOG.md
index cf8c657b..11a0a3a5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,6 @@
 # Release Notes for Campaign
 
-## 2.11.1 - Unreleased
+## 2.12.0 - 2024-01-03
 
 ### Added
 
@@ -12,6 +12,7 @@
 - Fixed a bug that could cause an error when viewing contacts in an incomplete segment ([#441](https://github.com/putyourlightson/craft-campaign/issues/441)).
 - Fixed a bug in which the import job TTR setting was not being respected ([#445](https://github.com/putyourlightson/craft-campaign/issues/445)).
 - Fixed a bug in which the sendout job max retry attempts setting was not being respected.
+- Fixed a bug in which filtering contacts by last activity was not working ([#446](https://github.com/putyourlightson/craft-campaign/issues/446)).
 
 ## 2.11.0 - 2023-11-28
 
diff --git a/composer.json b/composer.json
index 435657b0..bfc4cba7 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": "2.11.1",
+  "version": "2.12.0",
   "type": "craft-plugin",
   "homepage": "https://putyourlightson.com/plugins/campaign",
   "license": "proprietary",
diff --git a/src/elements/db/ContactElementQuery.php b/src/elements/db/ContactElementQuery.php
index 7e903a12..44a28220 100644
--- a/src/elements/db/ContactElementQuery.php
+++ b/src/elements/db/ContactElementQuery.php
@@ -163,6 +163,10 @@ protected function beforePrepare(): bool
             }
         }
 
+        if ($this->lastActivity) {
+            $this->subQuery->andWhere(Db::parseDateParam('campaign_contacts.lastActivity', $this->lastActivity));
+        }
+
         return parent::beforePrepare();
     }