diff --git a/db/migrate/20220725070026_cleanup_assign_tos_from_betagouv.rb b/db/migrate/20220725070026_cleanup_assign_tos_from_betagouv.rb
new file mode 100644
index 000000000..e58878c33
--- /dev/null
+++ b/db/migrate/20220725070026_cleanup_assign_tos_from_betagouv.rb
@@ -0,0 +1,12 @@
+class CleanupAssignTosFromBetagouv < ActiveRecord::Migration[6.1]
+  def up
+    super_admin_emails = SuperAdmin.all.pluck(:email)
+
+    super_admin_emails.each do |email|
+      user = User.find_by(email: email)
+      if user && user.instructeur
+        user.instructeur.assign_to.destroy_all
+      end
+    end
+  end
+end