diff --git a/backend/main.py b/backend/main.py
index a521374..7a3871b 100644
--- a/backend/main.py
+++ b/backend/main.py
@@ -191,3 +191,8 @@ app.include_router(shares_router)
 # Phase 4: audit log viewer + CSV export (ADMIN-06)
 from api.audit import router as audit_router  # noqa: E402
 app.include_router(audit_router)
+
+# Phase 5: cloud storage backend connection management (CLOUD-01..07)
+from api.cloud import router as cloud_router, users_router as cloud_users_router  # noqa: E402
+app.include_router(cloud_router)
+app.include_router(cloud_users_router)