diff --git a/README.md b/README.md
index cc41668..ee4b75f 100644
--- a/README.md
+++ b/README.md
@@ -4,6 +4,10 @@ This project is based on Drutopia, which means it is compatible with
 existing and future Drutopia features.  We will be diverging from
 Drutopia for special functionality, however.
 
+## Temporary upgrade notes
+
+There's an error in the update hooks about url alias table not found, but confirmed that all the entries in `old_5ebc14_url_alias` also exist in the new `path_alias` table, so whatever happened there, nothing is lost in the upgrade.
+
 ## Getting started
 
 One time: