diff --git a/hugolib/metadata.go b/hugolib/metadata.go
index 323acdbc5..dcef03c9c 100644
--- a/hugolib/metadata.go
+++ b/hugolib/metadata.go
@@ -38,6 +38,7 @@ func interfaceToStringToDate(i interface{}) time.Time {
 func stringToDate(s string) (time.Time, error) {
 	return parseDateWith(s, []string{
 		time.RFC3339,
+		"2006-01-02T15:04:05", // iso8601 without timezone
 		time.RFC1123Z,
 		time.RFC1123,
 		time.RFC822Z,