diff --git a/go.mod b/go.mod
index 8a71f73..3288103 100644
--- a/go.mod
+++ b/go.mod
@@ -3,6 +3,6 @@ module github.com/emersion/go-webdav
 go 1.13
 
 require (
-	github.com/emersion/go-ical v0.0.0-20200224201310-cd514449c39e
+	github.com/emersion/go-ical v0.0.0-20220601085725-0864dccc089f
 	github.com/emersion/go-vcard v0.0.0-20191221110513-5f81fa0d3cc7
 )
diff --git a/go.sum b/go.sum
index 46d9ff1..dd7ab94 100644
--- a/go.sum
+++ b/go.sum
@@ -1,4 +1,6 @@
-github.com/emersion/go-ical v0.0.0-20200224201310-cd514449c39e h1:YGM1sI7edZOt8KAfX9Miq/X99d2QXdgjkJ7vN4HjxAA=
-github.com/emersion/go-ical v0.0.0-20200224201310-cd514449c39e/go.mod h1:4xVTBPcT43a1pp3vdaa+FuRdX5XhKCZPpWv7m0z9ByM=
+github.com/emersion/go-ical v0.0.0-20220601085725-0864dccc089f h1:feGUUxxvOtWVOhTko8Cbmp33a+tU0IMZxMEmnkoAISQ=
+github.com/emersion/go-ical v0.0.0-20220601085725-0864dccc089f/go.mod h1:2MKFUgfNMULRxqZkadG1Vh44we3y5gJAtTBlVsx1BKQ=
 github.com/emersion/go-vcard v0.0.0-20191221110513-5f81fa0d3cc7 h1:SE+tcd+0kn0cT4MqTo66gmkjqWHF1Z+Yha5/rhLs/H8=
 github.com/emersion/go-vcard v0.0.0-20191221110513-5f81fa0d3cc7/go.mod h1:HMJKR5wlh/ziNp+sHEDV2ltblO4JD2+IdDOWtGcQBTM=
+github.com/teambition/rrule-go v1.7.2 h1:goEajFWYydfCgavn2m/3w5U+1b3PGqPUHx/fFSVfTy0=
+github.com/teambition/rrule-go v1.7.2/go.mod h1:mBJ1Ht5uboJ6jexKdNUJg2NcwP8uUMNvStWXlJD3MvU=