@@ -13,8 +13,8 @@ "time"
 
 	"github.com/Southclaws/fault"
 	"github.com/Southclaws/fault/fmsg"
-	ical "github.com/arran4/golang-ical"
 	"go.alanpearce.eu/x/log"
+	ical "vimagination.zapto.org/ics"
 
 	"go.alanpearce.eu/homestead/internal/cache"
 	"go.alanpearce.eu/homestead/internal/config"
@@ -38,9 +38,10 @@ *ical.Calendar
 }
 
 type Busy struct {
-	ical.VBusy
+	ical.FreeBusy
 	StartTime Date
 	EndTime   Date
+	Type      ical.ParamFreeBusyType
 }
 
 type Date struct {
@@ -97,7 +98,7 @@ return err
 	}
 	defer f.Close()
 
-	c.Calendar, err = ical.ParseCalendar(f)
+	c.Calendar, err = ical.Decode(f)
 	if err != nil {
 		c.log.Warn("error parsing calendar", "error", err)
 
@@ -157,34 +158,25 @@ if c.Calendar == nil {
 		return nil, fault.New("calendar not initialised")
 	}
 
-	in := c.Busys()
-	bs := make([]*Busy, 0, len(in))
-
-	for _, b := range in {
-		st, err := b.GetStartAt()
-		if err != nil {
-			c.log.Warn("could not get start time", "event", b.Id(), "error", err)
-
-			continue
-		}
+	bs := make([]*Busy, 0, len(c.FreeBusy))
 
-		et, err := b.GetEndAt()
-		if err != nil {
-			c.log.Warn("could not get end time", "event", b.Id(), "error", err)
+	for _, fb := range c.FreeBusy {
+		for _, b := range fb.FreeBusy {
+			st := b.Start
+			et := b.End
 
-			continue
-		}
+			if st.Before(from) && et.Before(from) ||
+				st.After(to) && et.After(to) {
+				continue
+			}
 
-		if st.Before(from) && et.Before(from) ||
-			st.After(to) && et.After(to) {
-			continue
+			bs = append(bs, &Busy{
+				FreeBusy:  fb,
+				Type:      *b.FreeBusyType,
+				StartTime: Date{Time: st.Time},
+				EndTime:   Date{Time: et.Time},
+			})
 		}
-
-		bs = append(bs, &Busy{
-			VBusy:     *b,
-			StartTime: Date{Time: st},
-			EndTime:   Date{Time: et},
-		})
 	}
 
 	slices.SortFunc(bs, func(a, b *Busy) int {
@@ -241,7 +233,7 @@ return nil, fault.Wrap(err, fmsg.With("could not get events"))
 		}
 
 		for _, ev := range evs {
-			c.log.Debug("processing event", "id", ev.Id())
+			c.log.Debug("processing event", "id", ev.UID)
 
 			cd.BusyPeriods = append(cd.BusyPeriods, ev)
 		}