diff --git a/packages/models-library/src/models_library/basic_types.py b/packages/models-library/src/models_library/basic_types.py
index a2b104b049f..3e20878570d 100644
--- a/packages/models-library/src/models_library/basic_types.py
+++ b/packages/models-library/src/models_library/basic_types.py
@@ -1,5 +1,5 @@
 import re
-from enum import Enum
+from enum import StrEnum
 from typing import TypeAlias
 
 from pydantic import (
@@ -116,14 +116,14 @@ class HttpUrlWithCustomMinLength(HttpUrl):
     min_length = 0
 
 
-class LogLevel(str, Enum):
+class LogLevel(StrEnum):
     DEBUG = "DEBUG"
     INFO = "INFO"
     WARNING = "WARNING"
     ERROR = "ERROR"
 
 
-class BootModeEnum(str, Enum):
+class BootModeEnum(StrEnum):
     """
     Values taken by SC_BOOT_MODE environment variable
     set in Dockerfile and used during docker/boot.sh
@@ -140,7 +140,7 @@ def is_devel_mode(self) -> bool:
         return self in (self.DEBUG, self.DEVELOPMENT, self.LOCAL)
 
 
-class BuildTargetEnum(str, Enum):
+class BuildTargetEnum(StrEnum):
     """
     Values taken by SC_BUILD_TARGET environment variable
     set in Dockerfile that defines the stage targeted in the
diff --git a/packages/settings-library/src/settings_library/r_clone.py b/packages/settings-library/src/settings_library/r_clone.py
index 4bab5f4a327..ff04d509bef 100644
--- a/packages/settings-library/src/settings_library/r_clone.py
+++ b/packages/settings-library/src/settings_library/r_clone.py
@@ -1,4 +1,4 @@
-from enum import Enum
+from enum import StrEnum
 
 from pydantic import Field, NonNegativeInt
 
@@ -6,7 +6,7 @@
 from .s3 import S3Settings
 
 
-class S3Provider(str, Enum):
+class S3Provider(StrEnum):
     AWS = "AWS"
     CEPH = "CEPH"
     MINIO = "MINIO"
diff --git a/services/director-v2/tests/unit/test_core_settings.py b/services/director-v2/tests/unit/test_core_settings.py
index 29d3113d155..84d99057f3a 100644
--- a/services/director-v2/tests/unit/test_core_settings.py
+++ b/services/director-v2/tests/unit/test_core_settings.py
@@ -21,7 +21,7 @@
 
 
 def _get_backend_type_options() -> set[str]:
-    return {x.value for x in S3Provider if not x.startswith("_")}
+    return {x for x in S3Provider if not x.startswith("_")}
 
 
 def test_supported_backends_did_not_change() -> None: