diff --git a/src/alfasim_sdk/__init__.py b/src/alfasim_sdk/__init__.py
index 61b63d0b..73c89763 100644
--- a/src/alfasim_sdk/__init__.py
+++ b/src/alfasim_sdk/__init__.py
@@ -1,6 +1,7 @@
 # -*- coding: utf-8 -*-
 """Top-level package for alfasim-sdk."""
 import pluggy
+
 from alfasim_sdk._internal import version
 from alfasim_sdk._internal.alfasim_sdk_utils import get_metadata
 from alfasim_sdk._internal.units import register_units
diff --git a/src/alfasim_sdk/_internal/alfacase/case_description.py b/src/alfasim_sdk/_internal/alfacase/case_description.py
index 0339aa83..5995876f 100644
--- a/src/alfasim_sdk/_internal/alfacase/case_description.py
+++ b/src/alfasim_sdk/_internal/alfacase/case_description.py
@@ -10,7 +10,6 @@
 
 import attr
 import numpy as np
-from alfasim_sdk._internal import constants
 from attr.validators import in_
 from attr.validators import instance_of
 from attr.validators import optional
@@ -34,6 +33,7 @@
 from .case_description_attributes import Numpy1DArray
 from .case_description_attributes import numpy_array_validator
 from .case_description_attributes import PhaseName
+from alfasim_sdk._internal import constants
 
 # [[[cog
 # # This cog has no output, it just declares and imports symbols used by cogs in this module.