diff --git a/gallery_dl/util.py b/gallery_dl/util.py
index 4c5e8948..0cea2cb0 100644
--- a/gallery_dl/util.py
+++ b/gallery_dl/util.py
@@ -424,6 +424,7 @@ GLOBALS = {
     "parse_int": text.parse_int,
     "urlsplit" : urllib.parse.urlsplit,
     "datetime" : datetime.datetime,
+    "timedelta": datetime.timedelta,
     "abort"    : raises(exception.StopExtraction),
     "terminate": raises(exception.TerminateExtraction),
     "re"       : re,