diff --git a/go.mod b/go.mod
index cf128b5a84677445db520397e290125fea379f18..4e89da608e9bedf04fbf1eab7bd4fa75eb853cc6 100644
--- a/go.mod
+++ b/go.mod
@@ -4,7 +4,7 @@ go 1.22
 
 require (
 	github.com/Songmu/prompter v0.5.1
-	github.com/arran4/golang-ical v0.2.1
+	github.com/arran4/golang-ical v0.2.8
 	github.com/coreos/go-oidc/v3 v3.9.0
 	github.com/evanphx/json-patch/v5 v5.9.0
 	github.com/fatih/structs v1.1.0
diff --git a/go.sum b/go.sum
index dcceb12fef75a18355119cb52cf5cc2867f58d06..23d0573c8b1bc8c87ad4ea78a26ad89644d5e61a 100644
--- a/go.sum
+++ b/go.sum
@@ -69,8 +69,8 @@ github.com/andybalholm/brotli v1.1.0/go.mod h1:sms7XGricyQI9K10gOSf56VKKWS4oLer5
 github.com/anmitsu/go-shlex v0.0.0-20200514113438-38f4b401e2be h1:9AeTilPcZAjCFIImctFaOjnTIavg87rW78vTPkQqLI8=
 github.com/anmitsu/go-shlex v0.0.0-20200514113438-38f4b401e2be/go.mod h1:ySMOLuWl6zY27l47sB3qLNK6tF2fkHG55UZxx8oIVo4=
 github.com/antihax/optional v1.0.0/go.mod h1:uupD/76wgC+ih3iEmQUL+0Ugr19nfwCT1kdvxnR2qWY=
-github.com/arran4/golang-ical v0.2.1 h1:7gSJYzMu4milwosbHNxi3mQZHiTWny9A7B8XH4rmx+w=
-github.com/arran4/golang-ical v0.2.1/go.mod h1:RqMuPGmwRRwjkb07hmm+JBqcWa1vF1LvVmPtSZN2OhQ=
+github.com/arran4/golang-ical v0.2.8 h1:8lsFcfQqzg0gBpIxq7fWr4RV+8SVENLMXpSic5xsFUs=
+github.com/arran4/golang-ical v0.2.8/go.mod h1:RqMuPGmwRRwjkb07hmm+JBqcWa1vF1LvVmPtSZN2OhQ=
 github.com/bsm/ginkgo/v2 v2.12.0 h1:Ny8MWAHyOepLGlLKYmXG4IEkioBysk6GpaRTLC8zwWs=
 github.com/bsm/ginkgo/v2 v2.12.0/go.mod h1:SwYbGRRDovPVboqFv0tPTcG1sN61LM1Z4ARdbAV9g4c=
 github.com/bsm/gomega v1.27.10 h1:yeMWxP2pV2fG3FgAODIY8EiRE3dy0aeFYt4l7wh6yKA=