diff --git a/go.mod b/go.mod
index b501bb12adb92..df425c8afe561 100644
--- a/go.mod
+++ b/go.mod
@@ -210,7 +210,7 @@ require (
 	github.com/go-jose/go-jose/v4 v4.0.2
 	github.com/gomarkdown/markdown v0.0.0-20240930133441-72d49d9543d8
 	github.com/google/go-github/v61 v61.0.0
-	github.com/mocktools/go-smtp-mock/v2 v2.3.0
+	github.com/mocktools/go-smtp-mock/v2 v2.4.0
 	github.com/natefinch/atomic v1.0.1
 )
 
diff --git a/go.sum b/go.sum
index 322ef2b0c3937..0e5dd448a4be3 100644
--- a/go.sum
+++ b/go.sum
@@ -746,8 +746,8 @@ github.com/moby/moby v27.3.1+incompatible h1:KQbXBjo7PavKpzIl7UkHT31y9lw/e71Uvrq
 github.com/moby/moby v27.3.1+incompatible/go.mod h1:fDXVQ6+S340veQPv35CzDahGBmHsiclFwfEygB/TWMc=
 github.com/moby/term v0.5.0 h1:xt8Q1nalod/v7BqbG21f8mQPqH+xAaC9C3N3wfWbVP0=
 github.com/moby/term v0.5.0/go.mod h1:8FzsFHVUBGZdbDsJw/ot+X+d5HLUbvklYLJ9uGfcI3Y=
-github.com/mocktools/go-smtp-mock/v2 v2.3.0 h1:jgTDBEoQ8Kpw/fPWxy6qR2pGwtNn5j01T3Wut4xJo5Y=
-github.com/mocktools/go-smtp-mock/v2 v2.3.0/go.mod h1:n8aNpDYncZHH/cZHtJKzQyeYT/Dut00RghVM+J1Ed94=
+github.com/mocktools/go-smtp-mock/v2 v2.4.0 h1:u0ky0iyNW/LEMKAFRTsDivHyP8dHYxe/cV3FZC3rRjo=
+github.com/mocktools/go-smtp-mock/v2 v2.4.0/go.mod h1:h9AOf/IXLSU2m/1u4zsjtOM/WddPwdOUBz56dV9f81M=
 github.com/modern-go/concurrent v0.0.0-20180228061459-e0a39a4cb421/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q=
 github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd h1:TRLaZ9cD/w8PVh93nsPXa1VrQ6jlwL5oN8l14QlcNfg=
 github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q=