diff --git a/mod/assign/upgrade.txt b/mod/assign/upgrade.txt
index d8d0282c4d7..4047336a428 100644
--- a/mod/assign/upgrade.txt
+++ b/mod/assign/upgrade.txt
@@ -1,5 +1,10 @@
 This files describes API changes in the assign code.
 
+=== 3.1 ===
+
+* When downloading all submissions as a zip each students' files are in a separate folder, are no longer renamed
+  and the folder structure is kept intact.
+
 === 3.0 ===
 * assign_submission_status renderable now requires $usergroups in its constructor