diff --git a/NOTICE.md b/NOTICE.md
index ec9c580c..af8881c0 100644
--- a/NOTICE.md
+++ b/NOTICE.md
@@ -4,4 +4,36 @@ This repository may incorporate or depend on third-party open source components.
 
 When third-party notice obligations apply, the relevant notices should be included in this repository, in generated package artifacts, or made available through Microsoft's third-party notice distribution process.
 
-As the dependency set for this project evolves, this notice file may be updated to reflect additional third-party attribution requirements.
\ No newline at end of file
+As the dependency set for this project evolves, this notice file may be updated to reflect additional third-party attribution requirements.
+
+License notice for Sphinx
+------------------------------------------------------------------------------
+
+Unless otherwise indicated, all code in the Sphinx project is licenced under the
+two clause BSD licence below.
+
+Copyright (c) 2007-2026 by the Sphinx team (see AUTHORS file).
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+* Redistributions of source code must retain the above copyright
+  notice, this list of conditions and the following disclaimer.
+
+* Redistributions in binary form must reproduce the above copyright
+  notice, this list of conditions and the following disclaimer in the
+  documentation and/or other materials provided with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.