diff --git a/go.mod b/go.mod
index 8c35be5..55b57a5 100644
--- a/go.mod
+++ b/go.mod
@@ -5,7 +5,7 @@ go 1.19
 require (
 	github.com/DataDog/datadog-go v4.8.3+incompatible
 	github.com/Songmu/flextime v0.1.0
-	github.com/slack-go/slack v0.12.1
+	github.com/slack-go/slack v0.12.4
 	github.com/stretchr/testify v1.8.0
 	github.com/thoas/go-funk v0.9.3
 	k8s.io/api v0.26.3
diff --git a/go.sum b/go.sum
index 7eaf900..1c24851 100644
--- a/go.sum
+++ b/go.sum
@@ -182,6 +182,8 @@ github.com/rogpeppe/go-internal v1.3.0/go.mod h1:M8bDsm7K2OlrFYOpmOWEs/qY81heoFR
 github.com/sirupsen/logrus v1.7.0/go.mod h1:yWOB1SBYBC5VeMP7gHvWumXLIWorT60ONWic61uBYv0=
 github.com/slack-go/slack v0.12.1 h1:X97b9g2hnITDtNsNe5GkGx6O2/Sz/uC20ejRZN6QxOw=
 github.com/slack-go/slack v0.12.1/go.mod h1:hlGi5oXA+Gt+yWTPP0plCdRKmjsDxecdHxYQdlMQKOw=
+github.com/slack-go/slack v0.12.4 h1:4iLT2opw+/QptmQxBNA7S8pNfSIvtn0NDGu7Jq0emi4=
+github.com/slack-go/slack v0.12.4/go.mod h1:hlGi5oXA+Gt+yWTPP0plCdRKmjsDxecdHxYQdlMQKOw=
 github.com/spf13/pflag v1.0.5 h1:iy+VFUOCP1a+8yFto/drg2CJ5u0yRoB7fZw3DKv/JXA=
 github.com/spf13/pflag v1.0.5/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3An2Bg=
 github.com/stoewer/go-strcase v1.2.0/go.mod h1:IBiWB2sKIp3wVVQ3Y035++gc+knqhUQag1KpM8ahLw8=