diff --git a/src/vws/include_target_data.py b/src/vws/include_target_data.py
index e259f654..37682e08 100644
--- a/src/vws/include_target_data.py
+++ b/src/vws/include_target_data.py
@@ -2,12 +2,13 @@
 Tools for managing ``CloudRecoService.query``'s ``include_target_data``.
 """
 
-from enum import StrEnum, auto
+from enum import StrEnum, auto, unique
 
 from beartype import beartype
 
 
 @beartype
+@unique
 class CloudRecoIncludeTargetData(StrEnum):
     """
     Options for the ``include_target_data`` parameter of
diff --git a/src/vws/reports.py b/src/vws/reports.py
index 85b5d913..f6a77133 100644
--- a/src/vws/reports.py
+++ b/src/vws/reports.py
@@ -4,7 +4,7 @@
 
 import datetime
 from dataclasses import dataclass
-from enum import Enum
+from enum import Enum, unique
 
 from beartype import BeartypeConf, beartype
 
@@ -33,6 +33,7 @@ class DatabaseSummaryReport:
 
 
 @beartype
+@unique
 class TargetStatuses(Enum):
     """Constants representing VWS target statuses.