diff -r 90348f847b4b -r ca698656251c doc/book/devrepo/migration.rst
--- a/doc/book/devrepo/migration.rst	Wed Jun 12 19:58:00 2019 +0200
+++ b/doc/book/devrepo/migration.rst	Wed Oct 16 14:49:38 2019 +0200
@@ -164,6 +164,9 @@
 * `set_size_constraint(etype, rtype, size, commit=True)`, changes the size constraints
   for the relation <rtype> of entity type <etype>.
 
+* `update_bfss_path(old_path, new_path, commit=True)`, change the path from `old_path` to
+  `new_path` in Bytes File-System Storage (bfss).
+
 Data migration
 --------------
 The following functions for data migration are available in `repository` scripts: