diff --git a/WebAPI_Changelog.md b/WebAPI_Changelog.md
index 375e24d69..4dd39c4a8 100644
--- a/WebAPI_Changelog.md
+++ b/WebAPI_Changelog.md
@@ -1,5 +1,10 @@
 # WebAPI Changelog
 
+## 2.11.10
+
+* [#22932](https://github.com/qbittorrent/qBittorrent/pull/22932)
+  * `torrents/categories` and `sync/maindata` now serialize categories' `downloadPath` to `null`, rather than `undefined`
+
 ## 2.11.9
 
 * [#21015](https://github.com/qbittorrent/qBittorrent/pull/21015)
diff --git a/src/base/bittorrent/categoryoptions.cpp b/src/base/bittorrent/categoryoptions.cpp
index fec609ff7..c839670c6 100644
--- a/src/base/bittorrent/categoryoptions.cpp
+++ b/src/base/bittorrent/categoryoptions.cpp
@@ -52,7 +52,7 @@ BitTorrent::CategoryOptions BitTorrent::CategoryOptions::fromJSON(const QJsonObj
 
 QJsonObject BitTorrent::CategoryOptions::toJSON() const
 {
-    QJsonValue downloadPathValue = QJsonValue::Undefined;
+    QJsonValue downloadPathValue = QJsonValue::Null;
     if (downloadPath)
     {
         if (downloadPath->enabled)
diff --git a/src/webui/webapplication.h b/src/webui/webapplication.h
index 6ceb28593..2098e3635 100644
--- a/src/webui/webapplication.h
+++ b/src/webui/webapplication.h
@@ -53,7 +53,7 @@
 #include "base/utils/version.h"
 #include "api/isessionmanager.h"
 
-inline const Utils::Version<3, 2> API_VERSION {2, 11, 9};
+inline const Utils::Version<3, 2> API_VERSION {2, 11, 10};
 
 class APIController;
 class AuthController;