diff --git a/Utility/Scheduled.hs b/Utility/Scheduled.hs
index ead8f7716c..d23aaf039d 100644
--- a/Utility/Scheduled.hs
+++ b/Utility/Scheduled.hs
@@ -36,6 +36,7 @@ import Data.Time.LocalTime
 import Data.Time.Calendar
 import Data.Time.Calendar.WeekDate
 import Data.Time.Calendar.OrdinalDate
+import Data.Time.Format ()
 import Data.Tuple.Utils
 import Data.Char
 import Control.Applicative