diff --git a/cpdctrl/utility/data.py b/cpdctrl/utility/data.py
index 4bc68a6..2815cc2 100644
--- a/cpdctrl/utility/data.py
+++ b/cpdctrl/utility/data.py
@@ -24,7 +24,7 @@ class DataCollector:
         self.metadata = metadata
         self.path = os.path.abspath(os.path.expanduser(data_path))
         if dirname is None:
-            self.dirname = sanitize_filename(datetime.datetime.now(datetime.UTC).strftime("%Y-%m-%d_%H-%M") + "_" + self.name)
+            self.dirname = sanitize_filename(datetime.datetime.now().strftime("%Y-%m-%d_%H-%M") + "_" + self.name)
         else:
             self.dirname = sanitize_filename(dirname)
         self.dirpath = os.path.join(self.path, self.dirname)