diff --git a/EngieApi/Contracts.py b/EngieApi/Contracts.py
index edb82bb..e10167c 100644
--- a/EngieApi/Contracts.py
+++ b/EngieApi/Contracts.py
@@ -1,4 +1,5 @@
 import datetime
+from typing import List
 
 import numpy as np
 
@@ -8,7 +9,6 @@ from EngieApi.EngieAPI import EngieAPI
 
 class Dynamic:
     def __init__(self, btw=1.21):
-
         self.btw = btw
         self.vast = 100.7  # EUR / jaar
 
@@ -35,22 +35,26 @@ class Dynamic:
         prijs = 0.2040 + 0.1 * (epex_spot)  # zonder BTW per Cent/kWh
         # cent to eur
         prijs /= 100
-        prijs += self.groene_stroom + self.wwk + self.energiebijdrage + self.federale_accijns
-        
+        prijs += (
+            self.groene_stroom + self.wwk + self.energiebijdrage + self.federale_accijns
+        )
+
         # distirbution costs
         d = Capaciteitstarief()
         p, yearly = d.calculate_per_kwh(peak=peak)
         prijs += p
-        
+
         # add btw
         prijs *= self.btw
         return prijs, yearly + self.vast
 
-    def calculate_total_price_for_day(self, verbruik: list[int], date: datetime.date, peak: float) -> float:
+    def calculate_total_price_for_day(
+        self, verbruik: List[int], date: datetime.date, peak: float
+    ) -> float:
         """calculate_total_price_for_day calculate total price for given usage
 
         :param verbruik: a list of hourly usage values
-        :type verbruik: list[int]
+        :type verbruik: List[int]
         :param date: the date for the energy prices
         :type date: datetime.date
         :param peak: the monthly peak for the distribution costs
diff --git a/EngieApi/EngieAPI.py b/EngieApi/EngieAPI.py
index 9af6120..2deff5a 100755
--- a/EngieApi/EngieAPI.py
+++ b/EngieApi/EngieAPI.py
@@ -1,9 +1,10 @@
 import json
 from datetime import date, datetime, timedelta
+from typing import List
 
 import requests
 
-date_format = '%Y-%m-%dT%H:%M:%S%z'
+date_format = "%Y-%m-%dT%H:%M:%S%z"
 
 
 class EngieAPI:
@@ -18,10 +19,10 @@ class EngieAPI:
             "User-Agent": "Mozilla/5.0 (Linux; Android 7.0; SM-G930V Build/NRD90M) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/59.0.3071.125 Mobile Safari/537.36",
             "Referer": "https://engieenergy.azurewebsites.net/",
             "Content-Length": "294",
-            "Accept-Language": "en-GB,en;q=0.9"
+            "Accept-Language": "en-GB,en;q=0.9",
         }
 
-    def get_epex_spot(self, date: date) -> list[float]:
+    def get_epex_spot(self, date: date) -> List[float]:
         to_date = datetime(date.year, date.month, date.day, 23, 59, 59)
         from_date = to_date - timedelta(days=1, hours=23, minutes=59, seconds=59)
 
@@ -29,14 +30,10 @@ class EngieAPI:
             "ApplicationDate": {
                 "From": from_date.strftime(date_format),
                 "To": to_date.strftime(date_format),
-                "UseTime": True
+                "UseTime": True,
             },
             "IncludeOffset": True,
-            "Items": [
-                {
-                    "IdRef": 7070
-                }
-            ]
+            "Items": [{"IdRef": 7070}],
         }
 
         res = requests.post(self.url, headers=self.headers, data=json.dumps(data))
@@ -46,7 +43,7 @@ class EngieAPI:
             # check if the Date is the same as the one requested, attention to the timezone
             if datetime.strptime(j["Date"], date_format).date() == date:
                 values.append(j["Value"])
-                
+
         if not values:
             raise ValueError("No data found for this date")
         return values
diff --git a/setup.py b/setup.py
index cf14c61..f09d187 100644
--- a/setup.py
+++ b/setup.py
@@ -2,6 +2,6 @@ from setuptools import find_packages, setup
 
 setup(
     name="EngieApi",
-    version="0.1",
+    version="0.1.1",
     packages=find_packages(),
 )