diff --git a/go.mod b/go.mod
index e9d7a3ad..b403f220 100644
--- a/go.mod
+++ b/go.mod
@@ -31,7 +31,7 @@ require (
 	github.com/prometheus/client_golang v1.18.0
 	github.com/prometheus/common v0.46.0
 	github.com/rs/xid v1.4.0
-	github.com/slack-go/slack v0.11.2
+	github.com/slack-go/slack v0.12.5
 	github.com/spf13/cobra v1.6.1
 	github.com/wabarc/archive.is v1.4.0
 	github.com/wabarc/archive.org v1.2.1-0.20210708220121-cb9b83ff9896
diff --git a/go.sum b/go.sum
index 6b8e5edb..72d27960 100644
--- a/go.sum
+++ b/go.sum
@@ -410,8 +410,8 @@ github.com/sirupsen/logrus v1.2.0/go.mod h1:LxeOpSwHxABJmUn/MG1IvRgCAasNZTLOkJPx
 github.com/sirupsen/logrus v1.8.1/go.mod h1:yWOB1SBYBC5VeMP7gHvWumXLIWorT60ONWic61uBYv0=
 github.com/sirupsen/logrus v1.9.0 h1:trlNQbNUG3OdDrDil03MCb1H2o9nJ1x4/5LYw7byDE0=
 github.com/sirupsen/logrus v1.9.0/go.mod h1:naHLuLoDiP4jHNo9R0sCBMtWGeIprob74mVsIT4qYEQ=
-github.com/slack-go/slack v0.11.2 h1:IWl90Rk+jqPEVyiBytH27CSN/TFAg2vuDDfoPRog/nc=
-github.com/slack-go/slack v0.11.2/go.mod h1:hlGi5oXA+Gt+yWTPP0plCdRKmjsDxecdHxYQdlMQKOw=
+github.com/slack-go/slack v0.12.5 h1:ddZ6uz6XVaB+3MTDhoW04gG+Vc/M/X1ctC+wssy2cqs=
+github.com/slack-go/slack v0.12.5/go.mod h1:hlGi5oXA+Gt+yWTPP0plCdRKmjsDxecdHxYQdlMQKOw=
 github.com/soheilhy/cmux v0.1.4/go.mod h1:IM3LyeVVIOuxMH7sFAkER9+bJ4dT7Ms6E4xg4kGIyLM=
 github.com/spaolacci/murmur3 v0.0.0-20180118202830-f09979ecbc72/go.mod h1:JwIasOWyU6f++ZhiEuf87xNszmSA2myDM2Kzu9HwQUA=
 github.com/spaolacci/murmur3 v1.1.0 h1:7c1g84S4BPRrfL5Xrdp6fOJ206sU9y293DDHaoy0bLI=