diff --git a/app/api/__init__.py b/app/api/__init__.py
index 341f7fa..039b4e0 100644
--- a/app/api/__init__.py
+++ b/app/api/__init__.py
@@ -20,12 +20,12 @@ app.add_route(s_index, "/")
 
 app.add_route(s_api_tonconnect_manifest, "/api/tonconnect-manifest.json")
 
-app.add_route(s_api_v1_auth_twa, "/api/v1/auth.twa", methods=["POST"])
+app.add_route(s_api_v1_auth_twa, "/api/v1/auth.twa", methods=["POST", "OPTIONS"])
 
-app.add_route(s_api_v1_storage_post, "/api/v1/storage", methods=["POST"])
-app.add_route(s_api_v1_storage_get, "/api/v1/storage/<file_hash>", methods=["GET"])
+app.add_route(s_api_v1_storage_post, "/api/v1/storage", methods=["POST", "OPTIONS"])
+app.add_route(s_api_v1_storage_get, "/api/v1/storage/<file_hash>", methods=["GET", "OPTIONS"])
 
-app.add_route(s_api_v1_custodial_upload_content, "/api/v1/custodial.uploadContent", methods=["POST"])
+app.add_route(s_api_v1_custodial_upload_content, "/api/v1/custodial.uploadContent", methods=["POST", "OPTIONS"])
 
 
 @app.exception(BaseException)