diff --git a/book/changelog.md b/book/changelog.md
index 26ed1d67..a9399813 100644
--- a/book/changelog.md
+++ b/book/changelog.md
@@ -136,6 +136,10 @@ This will be the first release of Grapevine since it was forked from Conduit
     the server is now behind the `serve` command, so `grapevine --config ...`
     becomes `grapevine serve --config ...`.
     ([!108](https://gitlab.computer.surgery/matrix/grapevine/-/merge_requests/108))
+14. **BREAKING** Break db compatibility with conduit. In order to move back to
+    conduit from grapevine, admins now need to use the `grapevine db migrate`
+    command.
+    ([!85](https://gitlab.computer.surgery/matrix/grapevine/-/merge_requests/85))
 
 ### Fixed