diff --git a/Utilities.py b/Utilities.py
index 92d94ea..2585430 100644
--- a/Utilities.py
+++ b/Utilities.py
@@ -1,5 +1,7 @@
+from __future__ import annotations
+
 import typing
-from typing import Literal, Dict
+from typing import TYPE_CHECKING, Literal, Dict
 
 import numpy as np
 import pandas as pd
@@ -7,7 +9,8 @@
 
 from InOutModule.printer import Printer
 
-from InOutModule.CaseStudy import CaseStudy
+if TYPE_CHECKING:
+    from InOutModule.CaseStudy import CaseStudy
 
 printer = Printer.getInstance()