diff --git a/go.mod b/go.mod
index 03c0efa70..30e520a8f 100644
--- a/go.mod
+++ b/go.mod
@@ -35,7 +35,7 @@ require (
 	github.com/mattn/go-colorable v0.1.14
 	github.com/mattn/go-isatty v0.0.20
 	github.com/minio/minio-go/v7 v7.0.99
-	github.com/mocktools/go-smtp-mock/v2 v2.5.1
+	github.com/mocktools/go-smtp-mock/v2 v2.5.3
 	github.com/mxk/go-vss v1.2.1
 	github.com/natefinch/atomic v1.0.1
 	github.com/petar/GoLLRB v0.0.0-20210522233825-ae3b015fd3e9
diff --git a/go.sum b/go.sum
index eec568f03..5c606be13 100644
--- a/go.sum
+++ b/go.sum
@@ -205,8 +205,8 @@ github.com/minio/minio-go/v7 v7.0.99 h1:2vH/byrwUkIpFQFOilvTfaUpvAX3fEFhEzO+DR3D
 github.com/minio/minio-go/v7 v7.0.99/go.mod h1:EtGNKtlX20iL2yaYnxEigaIvj0G0GwSDnifnG8ClIdw=
 github.com/moby/sys/mountinfo v0.7.2 h1:1shs6aH5s4o5H2zQLn796ADW1wMrIwHsyJ2v9KouLrg=
 github.com/moby/sys/mountinfo v0.7.2/go.mod h1:1YOa8w8Ih7uW0wALDUgT1dTTSBrZ+HiBLGws92L2RU4=
-github.com/mocktools/go-smtp-mock/v2 v2.5.1 h1:QcMJMChSgG1olVj4o6xxQFdrWzRjYNrcq660HAjd0wA=
-github.com/mocktools/go-smtp-mock/v2 v2.5.1/go.mod h1:Rr8M2njlxx//l5INl2+uESnsL2lDsL24teEykCrGfmE=
+github.com/mocktools/go-smtp-mock/v2 v2.5.3 h1:vO8NwtRiuXg+GjF+u2QCkEfkp1pt1ZpINJ9mD2DDoNQ=
+github.com/mocktools/go-smtp-mock/v2 v2.5.3/go.mod h1:qBGjYXy5jKKVFhDnB39DYQfn4hWfcqWAlJTcvrku3rg=
 github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 h1:C3w9PqII01/Oq1c1nUAm88MOHcQC9l5mIlSMApZMrHA=
 github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822/go.mod h1:+n7T8mK8HuQTcFwEeznm/DIxMOiR9yIdICNftLE1DvQ=
 github.com/mxk/go-vss v1.2.1 h1:shspH0qgqZ9l5sfIRsXS5BgZXz25/BY+ZQsW0HlD0fM=
@@ -266,7 +266,6 @@ github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/
 github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO+kdMU+MU=
 github.com/stretchr/testify v1.8.4/go.mod h1:sz/lmYIOXD/1dqDmKjjqLyZ2RngseejIcXlSw2iwfAo=
 github.com/stretchr/testify v1.9.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
-github.com/stretchr/testify v1.10.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
 github.com/stretchr/testify v1.11.1 h1:7s2iGBzp5EwR7/aIZr8ao5+dra3wiQyKjjFuvgVKu7U=
 github.com/stretchr/testify v1.11.1/go.mod h1:wZwfW3scLgRK+23gO65QZefKpKQRnfz6sD981Nm4B6U=
 github.com/studio-b12/gowebdav v0.12.0 h1:kFRtQECt8jmVAvA6RHBz3geXUGJHUZA6/IKpOVUs5kM=