diff --git a/UPDATE.md b/UPDATE.md
index a8353df..19d0008 100644
--- a/UPDATE.md
+++ b/UPDATE.md
@@ -39,4 +39,7 @@ cd /path/to/friendica-directory
 bin/console dbupdate
 ```
 
-You're all set!
\ No newline at end of file
+### Known issues
+
+Before version 2.1, updating the database schema was impossible because the `status` column value of the `migration_version` table was incorrectly set to `partial up` instead of `complete`.  
+Updating from 2.0.x, changing the value allows to update the database schema.