diff --git a/go.mod b/go.mod
index 991cea52..0992aec7 100644
--- a/go.mod
+++ b/go.mod
@@ -26,7 +26,7 @@ require (
 	github.com/lib/pq v1.10.9
 	github.com/mattn/go-runewidth v0.0.15
 	github.com/mattn/go-sqlite3 v1.14.22
-	github.com/mhale/smtpd v0.8.2
+	github.com/mhale/smtpd v0.8.3
 	github.com/mrz1836/postmark v1.6.4
 	github.com/pkg/term v1.2.0-beta.2.0.20211217091447-1a4a3b719465
 	github.com/refaktor/go-peg v0.0.0-20220116201714-31e3dfa8dc7d
diff --git a/go.sum b/go.sum
index f2a429b3..c9941108 100644
--- a/go.sum
+++ b/go.sum
@@ -158,8 +158,8 @@ github.com/mattn/go-runewidth v0.0.15 h1:UNAjwbU9l54TA3KzvqLGxwWjHmMgBUVhBiTjelZ
 github.com/mattn/go-runewidth v0.0.15/go.mod h1:Jdepj2loyihRzMpdS35Xk/zdY8IAYHsh153qUoGf23w=
 github.com/mattn/go-sqlite3 v1.14.22 h1:2gZY6PC6kBnID23Tichd1K+Z0oS6nE/XwU+Vz/5o4kU=
 github.com/mattn/go-sqlite3 v1.14.22/go.mod h1:Uh1q+B4BYcTPb+yiD3kU8Ct7aC0hY9fxUwlHK0RXw+Y=
-github.com/mhale/smtpd v0.8.2 h1:rHKOMHeFoDvcq8Na9ErCbNcjlWTSyGtznOmJpWsOzuc=
-github.com/mhale/smtpd v0.8.2/go.mod h1:MQl+y2hwIEQCXtNhe5+55n0GZOjSmeqORDIXbqUL3x4=
+github.com/mhale/smtpd v0.8.3 h1:8j8YNXajksoSLZja3HdwvYVZPuJSqAxFsib3adzRRt8=
+github.com/mhale/smtpd v0.8.3/go.mod h1:MQl+y2hwIEQCXtNhe5+55n0GZOjSmeqORDIXbqUL3x4=
 github.com/modern-go/concurrent v0.0.0-20180228061459-e0a39a4cb421 h1:ZqeYNhU3OHLH3mGKHDcjJRFFRrJa6eAM5H+CtDdOsPc=
 github.com/modern-go/concurrent v0.0.0-20180228061459-e0a39a4cb421/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q=
 github.com/modern-go/reflect2 v0.0.0-20180701023420-4b7aa43c6742/go.mod h1:bx2lNnkwVCuqBIxFjflWJWanXIb3RllmbCylyMrvgv0=