diff --git a/locales/en.json b/locales/en.json
index 1157e0a54..2a2db5340 100644
--- a/locales/en.json
+++ b/locales/en.json
@@ -294,6 +294,7 @@
     "migration_description_0006_sync_admin_and_root_passwords": "Synchronize admin and root passwords",
     "migration_description_0007_ssh_conf_managed_by_yunohost_step1": "Let the SSH configuration be managed by YunoHost (step 1, automatic)",
     "migration_description_0008_ssh_conf_managed_by_yunohost_step2": "Let the SSH configuration be managed by YunoHost (step 2, manual)",
+    "migration_description_0009_migrate_to_apps_json": "Remove deprecated appslists and use the new unified 'apps.json' list instead.",
     "migration_0003_backward_impossible": "The stretch migration cannot be reverted.",
     "migration_0003_start": "Starting migration to Stretch. The logs will be available in {logfile}.",
     "migration_0003_patching_sources_list": "Patching the sources.lists…",