diff --git a/go.mod b/go.mod
index 985d857797a46af29b3fa63a313f5d556f1b926b..41c50308333a4fd00a16355ce35cf0d2f84b74ee 100644
--- a/go.mod
+++ b/go.mod
@@ -6,7 +6,7 @@ toolchain go1.23.1
 
 require (
 	github.com/chrj/smtpd v0.3.1
-	github.com/jhillyerd/enmime v1.1.0
+	github.com/jhillyerd/enmime v1.3.0
 	github.com/oschwald/geoip2-golang v1.11.0
 	github.com/prometheus/client_golang v1.20.3
 	golang.org/x/sync v0.8.0
diff --git a/go.sum b/go.sum
index 21ae17de12e39c6feb906f40d39f9e600ed393f2..070a3b7c536af17ae1f996dbee7cda084def5d63 100644
--- a/go.sum
+++ b/go.sum
@@ -76,6 +76,8 @@ github.com/jhillyerd/enmime v1.0.1 h1:y6RyqIgBOI2hIinOXIzmeB+ITRVls0zTJIm5GwgXnj
 github.com/jhillyerd/enmime v1.0.1/go.mod h1:LMMbm6oTlzWHghPavqHtOrP/NosVv3l42CUrZjn03/Q=
 github.com/jhillyerd/enmime v1.1.0 h1:ubaIzg68VY7CMCe2YbHe6nkRvU9vujixTkNz3EBvZOw=
 github.com/jhillyerd/enmime v1.1.0/go.mod h1:FRFuUPCLh8PByQv+8xRcLO9QHqaqTqreYhopv5eyk4I=
+github.com/jhillyerd/enmime v1.3.0 h1:LV5kzfLidiOr8qRGIpYYmUZCnhrPbcFAnAFUnWn99rw=
+github.com/jhillyerd/enmime v1.3.0/go.mod h1:6c6jg5HdRRV2FtvVL69LjiX1M8oE0xDX9VEhV3oy4gs=
 github.com/jpillora/backoff v1.0.0/go.mod h1:J/6gKK9jxlEcS3zixgDgUAsiuZ7yrSoa/FX5e0EB2j4=
 github.com/json-iterator/go v1.1.6/go.mod h1:+SdeFBvtyEkXs7REEP0seUULqWtbJapLOCVDaaPEHmU=
 github.com/json-iterator/go v1.1.10/go.mod h1:KdQUCv79m/52Kvf8AW2vK1V8akMuk1QjK/uOdHXbAo4=