diff --git a/hololens/hololens-release-notes.md b/hololens/hololens-release-notes.md
index 78010112..e3af6695 100644
--- a/hololens/hololens-release-notes.md
+++ b/hololens/hololens-release-notes.md
@@ -31,7 +31,7 @@ In between our feature updates, we also release fixes and improvements and secur
 
 To help provide clarity, this release notes page provides information for every major and minor update. The most current release is listed first, and previous releases follow in chronological order. If you’d like to learn about updates to down level versions (or view previous major feature releases), refer to the table that follows.
 
-Note:  the current release version is the November 2024 Update, Build 1409.
+Note:  the current release version is the December 2024 Update, Build 1413.
 
 | Major release   number | Feature release name                  | Date         | Build number |
 |------------------------|-------------------------------------|--------------|--------------|
@@ -61,6 +61,26 @@ To explicitly check for updates, launch the Settings app and select **Update & S
 > [!TIP]
 > Searching for a feature but didn't find it on this page? Try checking out of the previous feature release pages. You can navigate there using the links provided, or the table of contents.
 
+## Windows Holographic, version 24H1 - December 2024 Update
+
+- Build 22621.1413
+
+Improvements and fixes in the update:
+
+- This update included Windows security updates.
+
+> [!IMPORTANT]
+> ###### Final Servicing Update for Windows 10
+> If your device is on Windows 10, the December 2024 update is final monthly servicing update for HoloLens 2 on Windows 10, version 22H2 and older (Builds 20348.1528 and older). Customers who require continued security servicing updates are encouraged to upgrade to Windows 11 to continue to receive monthly security servicing updates.
+> 
+> To upgrade, HoloLens 2 devices must be currently running 21H1 May 2021 update (build 20346.1002) or newer. If the 23H1 feature update is not available, update your device and try again. If you are on a version that is older than Windows Holographic version 20H2 (Build 19041.1136), you first need to update to the February 2021 update (build 19041.1136 or newer) before you update to the 21H1 May 2021 update (build 20346.1002) or newer. To learn more about HoloLens 2 on Windows 11, refer to the [Windows Holographic, version 23H1 - June 2023 Update](hololens-release-notes.md#windows-holographic-version-23h1---june-2023-update).
+>
+> ###### HoloLens 1st Gen Device Support
+>
+> HoloLens (1st Gen) entered [Long-Term Servicing (LTS)](hololens1-release-notes.md#hololens-1st-gen-long-term-servicing) state on November 23, 2021, and the December 2024 update is the final monthly servicing update for HoloLens 1.
+> After December 10, 2024, HoloLens (1st Gen) devices continue to function, however no additional security updates or technical support are available.
+> There is no out-of-warranty support or inventory for device exchange.
+
 ## Windows Holographic, version 24H1 - November 2024 Update, Final Feature Release
 
 - Build 22621.1409