diff --git a/lib/dl_connector_bundle_chs3/dl_connector_bundle_chs3/chs3_yadocs/core/storage_schemas/connection.py b/lib/dl_connector_bundle_chs3/dl_connector_bundle_chs3/chs3_yadocs/core/storage_schemas/connection.py
index 2f432dc19..a234054e0 100644
--- a/lib/dl_connector_bundle_chs3/dl_connector_bundle_chs3/chs3_yadocs/core/storage_schemas/connection.py
+++ b/lib/dl_connector_bundle_chs3/dl_connector_bundle_chs3/chs3_yadocs/core/storage_schemas/connection.py
@@ -15,6 +15,7 @@ class YaDocsFileConnectionSourceStorageSchema(BaseFileConnectionSourceStorageSch
     public_link = fields.String(allow_none=True, load_default=None)
     private_path = fields.String(allow_none=True, load_default=None)
     first_line_is_header = fields.Boolean(allow_none=True, load_default=None)
+    sheet_id = fields.String(allow_none=True, load_default=None)
     data_updated_at = fields.DateTime()