diff --git a/wsgi.py b/wsgi.py
index bf1fc9c..ef76d15 100644
--- a/wsgi.py
+++ b/wsgi.py
@@ -1,5 +1,8 @@
 import datetime
 import io
+import locale
+import os
+import time
 from itertools import chain
 from pathlib import Path
 
@@ -19,7 +22,9 @@ config = {
     "CACHE_THRESHOLD": 50,
     "CACHE_DIR": "cache",
 }
-import locale
+
+os.environ["TZ"] = "Europe/Berlin"
+time.tzset()
 
 locale.setlocale(locale.LC_ALL, "de_DE.UTF-8")
 app = Flask(__name__)