diff --git a/src/validataclass/validators/__init__.py b/src/validataclass/validators/__init__.py
index 0eeb1e1..4094dff 100644
--- a/src/validataclass/validators/__init__.py
+++ b/src/validataclass/validators/__init__.py
@@ -4,6 +4,10 @@
 Use of this source code is governed by an MIT-style license that can be found in the LICENSE file.
 """
 
+# Abstract base class (needs to be imported first to avoid import loops)
+from .validator import Validator  # isort:skip
+
+# Validators
 from .allow_empty_string import AllowEmptyString
 from .any_of_validator import AnyOfValidator
 from .anything_validator import AnythingValidator
@@ -11,7 +15,7 @@
 from .boolean_validator import BooleanValidator
 from .dataclass_validator import DataclassValidator, T_Dataclass
 from .date_validator import DateValidator
-from .datetime_validator import DateTimeValidator, DateTimeFormat
+from .datetime_validator import DateTimeFormat, DateTimeValidator
 from .decimal_validator import DecimalValidator
 from .dict_validator import DictValidator
 from .discard_validator import DiscardValidator
@@ -27,9 +31,8 @@
 from .regex_validator import RegexValidator
 from .reject_validator import RejectValidator
 from .string_validator import StringValidator
-from .time_validator import TimeValidator, TimeFormat
+from .time_validator import TimeFormat, TimeValidator
 from .url_validator import UrlValidator
-from .validator import Validator
 
 __all__ = [
     'AllowEmptyString',