diff --git a/go.mod b/go.mod
index 3fbd4085..6dc92182 100644
--- a/go.mod
+++ b/go.mod
@@ -19,7 +19,7 @@ require (
 	github.com/line/line-bot-sdk-go v7.8.0+incompatible
 	github.com/mailgun/mailgun-go/v4 v4.12.0
 	github.com/pkg/errors v0.9.1
-	github.com/plivo/plivo-go/v7 v7.45.2
+	github.com/plivo/plivo-go/v7 v7.51.0
 	github.com/sendgrid/sendgrid-go v3.14.0+incompatible
 	github.com/silenceper/wechat/v2 v2.1.6
 	github.com/slack-go/slack v0.12.3
diff --git a/go.sum b/go.sum
index dba15b26..3ea18009 100644
--- a/go.sum
+++ b/go.sum
@@ -247,8 +247,8 @@ github.com/pkg/errors v0.8.1-0.20161029093637-248dadf4e906/go.mod h1:bwawxfHBFNV
 github.com/pkg/errors v0.8.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
 github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
-github.com/plivo/plivo-go/v7 v7.45.2 h1:j7PM32OKTz3kyIjY4TAee10d5ib2CMbW+0YG/3Udiac=
-github.com/plivo/plivo-go/v7 v7.45.2/go.mod h1:ceCFoYEzQrtrJjLcU7HR/r6Vz2kAVSaylrL7SjGPymc=
+github.com/plivo/plivo-go/v7 v7.51.0 h1:oR4tLTPhS8P/xJcSQ6FKQ7Ke5UKF8M56gE+S1sZG49I=
+github.com/plivo/plivo-go/v7 v7.51.0/go.mod h1:ceCFoYEzQrtrJjLcU7HR/r6Vz2kAVSaylrL7SjGPymc=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/prometheus/client_model v0.0.0-20190812154241-14fe0d1b01d4/go.mod h1:xMI15A0UPsDsEKsMN9yxemIoYk6Tm2C1GtYGdfGttqA=