diff --git a/go.mod b/go.mod
index 83db210..5460d9a 100644
--- a/go.mod
+++ b/go.mod
@@ -3,15 +3,16 @@ module git.sr.ht/~sircmpwn/tokidoki
 go 1.18
 
 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-imap v1.2.0
 	github.com/emersion/go-sasl v0.0.0-20211008083017-0b9dcfb154ac
 	github.com/emersion/go-vcard v0.0.0-20210521075357-3445b9171995
-	github.com/emersion/go-webdav v0.3.2-0.20220603063605-db966a275c93
+	github.com/emersion/go-webdav v0.3.2-0.20220916070414-6f22a649ac4c
 	github.com/go-chi/chi/v5 v5.0.7
 )
 
 require (
 	github.com/msteinert/pam v1.0.0 // indirect
+	github.com/teambition/rrule-go v1.7.2 // indirect
 	golang.org/x/text v0.3.7 // indirect
 )
diff --git a/go.sum b/go.sum
index 9fe49cb..a2a1f80 100644
--- a/go.sum
+++ b/go.sum
@@ -1,5 +1,5 @@
-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-imap v1.2.0 h1:lyUQ3+EVM21/qbWE/4Ya5UG9r5+usDxlg4yfp3TgHFA=
 github.com/emersion/go-imap v1.2.0/go.mod h1:Qlx1FSx2FTxjnjWpIlVNEuX+ylerZQNFE5NsmKFSejY=
 github.com/emersion/go-message v0.15.0/go.mod h1:wQUEfE+38+7EW8p8aZ96ptg6bAb1iwdgej19uXASlE4=
@@ -10,12 +10,16 @@ github.com/emersion/go-textwrapper v0.0.0-20200911093747-65d896831594/go.mod h1:
 github.com/emersion/go-vcard v0.0.0-20191221110513-5f81fa0d3cc7/go.mod h1:HMJKR5wlh/ziNp+sHEDV2ltblO4JD2+IdDOWtGcQBTM=
 github.com/emersion/go-vcard v0.0.0-20210521075357-3445b9171995 h1:DpVfmcoBs6o9VYcccNWbuKFQxuHCgt25/y4q9H8AUvc=
 github.com/emersion/go-vcard v0.0.0-20210521075357-3445b9171995/go.mod h1:HMJKR5wlh/ziNp+sHEDV2ltblO4JD2+IdDOWtGcQBTM=
-github.com/emersion/go-webdav v0.3.2-0.20220603063605-db966a275c93 h1:NNvUjFHONRpynKVnIpwbPRgFf8cINLpbw9G9KAyjSMk=
-github.com/emersion/go-webdav v0.3.2-0.20220603063605-db966a275c93/go.mod h1:uSM1VveeKtogBVWaYccTksToczooJ0rrVGNsgnDsr4Q=
+github.com/emersion/go-webdav v0.3.2-0.20220916070414-6f22a649ac4c h1:u1x2gi1VWRP3qr4orf20wsgYNu5jKwaY7hdrKYxagog=
+github.com/emersion/go-webdav v0.3.2-0.20220916070414-6f22a649ac4c/go.mod h1:lkPYZO/vsDNV9GPyVMBBsAUZzzxINL97bEVFykApo58=
 github.com/go-chi/chi/v5 v5.0.7 h1:rDTPXLDHGATaeHvVlLcR4Qe0zftYethFucbjVQ1PxU8=
 github.com/go-chi/chi/v5 v5.0.7/go.mod h1:DslCQbL2OYiznFReuXYUmQ2hGd1aDpCnlMNITLSKoi8=
 github.com/msteinert/pam v1.0.0 h1:4XoXKtMCH3+e6GIkW41uxm6B37eYqci/DH3gzSq7ocg=
 github.com/msteinert/pam v1.0.0/go.mod h1:M4FPeAW8g2ITO68W8gACDz13NDJyOQM9IQsQhrR6TOI=
+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=
+golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1 h1:SrN+KX8Art/Sf4HNj6Zcz06G7VEz+7w9tdXTPOZ7+l4=
+golang.org/x/term v0.0.0-20210927222741-03fcf44c2211 h1:JGgROgKl9N8DuW20oFS5gxc+lE67/N3FcwmBPMe7ArY=
 golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.3.7 h1:olpwvP2KacW1ZWvsR7uQhoyTYvKAupfQrRGBFM352Gk=
 golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=