diff --git a/go.mod b/go.mod
index 3f20bd8..736749c 100644
--- a/go.mod
+++ b/go.mod
@@ -4,10 +4,10 @@ go 1.18
 
 require (
 	git.sr.ht/~emersion/go-oauth2 v0.0.0-20240217160856-2e0d6e20b088
-	github.com/emersion/go-ical v0.0.0-20220601085725-0864dccc089f
+	github.com/emersion/go-ical v0.0.0-20240127095438-fc1c9d8fb2b6
 	github.com/emersion/go-imap/v2 v2.0.0-beta.2.0.20240417100641-a587a14d3f01
 	github.com/emersion/go-vcard v0.0.0-20230815062825-8fda7d206ec9
-	github.com/emersion/go-webdav v0.5.1-0.20240202164822-eaac65215b3a
+	github.com/emersion/go-webdav v0.5.1-0.20240419143909-21f251fa1de2
 	github.com/go-chi/chi/v5 v5.0.10
 	github.com/msteinert/pam v1.2.0
 	github.com/rs/zerolog v1.31.0
diff --git a/go.sum b/go.sum
index ab6273d..a677459 100644
--- a/go.sum
+++ b/go.sum
@@ -1,8 +1,8 @@
 git.sr.ht/~emersion/go-oauth2 v0.0.0-20240217160856-2e0d6e20b088 h1:KuPliLD8CQM1WbCHdjHR6mhadIzLaAJCNENmvB1y9gs=
 git.sr.ht/~emersion/go-oauth2 v0.0.0-20240217160856-2e0d6e20b088/go.mod h1:VHj0jSCLIkrfEwmOvJ4+ykpoVbD/YLN7BM523oKKBHc=
 github.com/coreos/go-systemd/v22 v22.5.0/go.mod h1:Y58oyj3AT4RCenI/lSvhwexgC+NSVTIJ3seZv2GcEnc=
-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-ical v0.0.0-20240127095438-fc1c9d8fb2b6 h1:kHoSgklT8weIDl6R6xFpBJ5IioRdBU1v2X2aCZRVCcM=
+github.com/emersion/go-ical v0.0.0-20240127095438-fc1c9d8fb2b6/go.mod h1:BEksegNspIkjCQfmzWgsgbu6KdeJ/4LwUZs7DMBzjzw=
 github.com/emersion/go-imap/v2 v2.0.0-beta.2.0.20240417100641-a587a14d3f01 h1:dq/06hDbCT+/DpbKWSrfrTeiJW97ION78N6J6Mktp2w=
 github.com/emersion/go-imap/v2 v2.0.0-beta.2.0.20240417100641-a587a14d3f01/go.mod h1:BZTFHsS1hmgBkFlHqbxGLXk2hnRqTItUgwjSSCsYNAk=
 github.com/emersion/go-message v0.18.1 h1:tfTxIoXFSFRwWaZsgnqS1DSZuGpYGzSmCZD8SK3QA2E=
@@ -11,8 +11,8 @@ github.com/emersion/go-sasl v0.0.0-20231106173351-e73c9f7bad43 h1:hH4PQfOndHDlpz
 github.com/emersion/go-sasl v0.0.0-20231106173351-e73c9f7bad43/go.mod h1:iL2twTeMvZnrg54ZoPDNfJaJaqy0xIQFuBdrLsmspwQ=
 github.com/emersion/go-vcard v0.0.0-20230815062825-8fda7d206ec9 h1:ATgqloALX6cHCranzkLb8/zjivwQ9DWWDCQRnxTPfaA=
 github.com/emersion/go-vcard v0.0.0-20230815062825-8fda7d206ec9/go.mod h1:HMJKR5wlh/ziNp+sHEDV2ltblO4JD2+IdDOWtGcQBTM=
-github.com/emersion/go-webdav v0.5.1-0.20240202164822-eaac65215b3a h1:IHOPSOw+XXKRSkuXTOeEtDejkuXqf0ohjZq9hew6ArA=
-github.com/emersion/go-webdav v0.5.1-0.20240202164822-eaac65215b3a/go.mod h1:ycyIzTelG5pHln4t+Y32/zBvmrM7+mV7x+V+Gx4ZQno=
+github.com/emersion/go-webdav v0.5.1-0.20240419143909-21f251fa1de2 h1:k/NO/RfeXFuKGcpHDkspYoE8u6tWoHs03tH5DXg22To=
+github.com/emersion/go-webdav v0.5.1-0.20240419143909-21f251fa1de2/go.mod h1:mI8iBx3RAODwX7PJJ7qzsKAKs/vY429YfS2/9wKnDbQ=
 github.com/go-chi/chi/v5 v5.0.10 h1:rLz5avzKpjqxrYwXNfmjkrYYXOyLJd37pz53UFHC6vk=
 github.com/go-chi/chi/v5 v5.0.10/go.mod h1:DslCQbL2OYiznFReuXYUmQ2hGd1aDpCnlMNITLSKoi8=
 github.com/godbus/dbus/v5 v5.0.4/go.mod h1:xhWf0FNVPg57R7Z0UbKHbJfkEywrmjJnf7w5xrFpKfA=
@@ -28,7 +28,6 @@ github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINE
 github.com/rs/xid v1.5.0/go.mod h1:trrq9SKmegXys3aeAKXMUTdJsYXVwGY3RLcfgqegfbg=
 github.com/rs/zerolog v1.31.0 h1:FcTR3NnLWW+NnTwwhFWiJSZr4ECLpqCm6QsEnyvbV4A=
 github.com/rs/zerolog v1.31.0/go.mod h1:/7mN4D5sKwJLZQ2b/znpjC3/GQWY/xaDXUM0kKWRHss=
-github.com/teambition/rrule-go v1.7.2/go.mod h1:mBJ1Ht5uboJ6jexKdNUJg2NcwP8uUMNvStWXlJD3MvU=
 github.com/teambition/rrule-go v1.8.2 h1:lIjpjvWTj9fFUZCmuoVDrKVOtdiyzbzc93qTmRVe/J8=
 github.com/teambition/rrule-go v1.8.2/go.mod h1:Ieq5AbrKGciP1V//Wq8ktsTXwSwJHDD5mD/wLBGl3p4=
 github.com/yuin/goldmark v1.4.13/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY=