diff --git a/xmodule/README.rst b/xmodule/README.rst
index 619eb9a8f0..e4f9876cc3 100644
--- a/xmodule/README.rst
+++ b/xmodule/README.rst
@@ -24,8 +24,11 @@ For years, edx-platform supported both content frameworks simultaneously via a F
 Fortunately, in 2021, `all remaining XModules were converted into XBlocks`_.
 Since support for the XModule framework is no longer necessary, `the BD-13 project`_ is now working to radically simplify the remaining XBlock runtime implementation.
 
+This folder was moved from ./common/lib/xmodule/xmodule to its current location, ./xmodule. The reasons that this folder (along with several others) were moved are detailed in `this ADR about the dissolution of sub-projects`_.
+
 .. _all remaining XModules were converted into XBlocks: https://discuss.openedx.org/t/xmodule-xblock-conversion-complete/4555
 .. _the BD-13 project: https://openedx.atlassian.net/wiki/spaces/COMM/pages/3062333478/BD-13+xModule+--+xBlock+Conversion+Phase+2
+.. _this ADR about the dissolution of sub-projects: https://github.com/openedx/edx-platform/blob/master/docs/decisions/0015-sub-project-dissolution.rst
 
 Direction
 *********