diff --git a/go.mod b/go.mod
index 21dea2e117468766fe4d08928d77b74c4f39e141..9ae5b954cea374ddcc70d33458a70a2f32f90bdd 100644
--- a/go.mod
+++ b/go.mod
@@ -4,7 +4,7 @@ go 1.15
 
 require (
 	github.com/chrj/smtpd v0.2.0
-	github.com/jhillyerd/enmime v0.8.3
+	github.com/jhillyerd/enmime v0.8.4
 	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
 	github.com/oschwald/geoip2-golang v1.4.0
 	github.com/prometheus/client_golang v1.9.0