diff --git a/NOTICE.md b/NOTICE.md
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+++ b/NOTICE.md
@@ -1537,4 +1537,34 @@ SOFTWARE.
 - UTF.Unknown
 - WinUIEx
 - WPF-UI
-- WyHash
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+- WyHash
+
+## Utility: PowerDisplay
+
+### Twinkle Tray
+
+PowerDisplay's DDC/CI implementation references techniques from Twinkle Tray.
+
+**Source**: https://github.com/xanderfrangos/twinkle-tray
+
+MIT License
+
+Copyright © 2020 Xander Frangos
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
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