diff --git a/mat-chalmers.cabal b/mat-chalmers.cabal
index f60e142..f63c5e3 100644
--- a/mat-chalmers.cabal
+++ b/mat-chalmers.cabal
@@ -54,6 +54,7 @@ library
                , thyme >= 0.4 && <= 0.5
                , word8 == 0.1.3
                , extra >= 1.7.10 && <= 1.8
+               , vector-space >= 0.16 && <0.18
 
 executable mat-chalmers
   main-is: Main.hs
diff --git a/src/Model.hs b/src/Model.hs
index d9b5c9a..ea9d730 100644
--- a/src/Model.hs
+++ b/src/Model.hs
@@ -37,13 +37,12 @@ import           Data.Text.Lazy                           ( fromStrict
 import           Prettyprinter                            ( Doc
                                                           , pretty
                                                           )
+import           Data.AffineSpace                         ( (.+^) )
 import           Data.Thyme                               ( _localDay
                                                           , _localTimeOfDay
                                                           , _todHour
-                                                          , _ymdDay
                                                           , _zonedTimeToLocalTime
                                                           , getZonedTime
-                                                          , gregorian
                                                           )
 import           Lens.Micro.Platform                      ( (^.)
                                                           , (&)
@@ -93,8 +92,7 @@ update = do
   dateNow     <- liftIO $ fmap (view _zonedTimeToLocalTime) getZonedTime
   let (textday, d) =
         if dateNow ^. _localTimeOfDay . _todHour >= nextDayHour
-          then
-            ("Tomorrow", dateNow & (_localDay . gregorian . _ymdDay) %~ (+ 1))
+          then ("Tomorrow", dateNow & _localDay %~ (.+^ 1))
           else ("Today", dateNow)
   let day'    = d ^. _localDay
   let karenR  = fetchAndCreateRestaurant day'