diff --git a/go.mod b/go.mod
index 86575f8c..e996acdf 100644
--- a/go.mod
+++ b/go.mod
@@ -17,7 +17,7 @@ require (
 	github.com/ProtonMail/go-apple-mobileconfig v0.0.0-20160701194735-7ea9927a11f6
 	github.com/ProtonMail/go-autostart v0.0.0-20181114175602-c5272053443a
 	github.com/ProtonMail/go-imap-id v0.0.0-20190926060100-f94a56b9ecde
-	github.com/ProtonMail/go-rfc5322 v0.4.0
+	github.com/ProtonMail/go-rfc5322 v0.5.0
 	github.com/ProtonMail/go-vcard v0.0.0-20180326232728-33aaa0a0c8a5
 	github.com/ProtonMail/gopenpgp/v2 v2.0.1
 	github.com/PuerkitoBio/goquery v1.5.1
diff --git a/go.sum b/go.sum
index 411e52ea..d972975a 100644
--- a/go.sum
+++ b/go.sum
@@ -27,6 +27,8 @@ github.com/ProtonMail/go-mime v0.0.0-20190923161245-9b5a4261663a h1:W6RrgN/sTxg1
 github.com/ProtonMail/go-mime v0.0.0-20190923161245-9b5a4261663a/go.mod h1:NYt+V3/4rEeDuaev/zw1zCq8uqVEuPHzDPo3OZrlGJ4=
 github.com/ProtonMail/go-rfc5322 v0.4.0 h1:H6RJNNu+xdkG7A3xKU+dV9sP8/w2K4e7pz1R2FM8kd8=
 github.com/ProtonMail/go-rfc5322 v0.4.0/go.mod h1:mzZWlMWnQJuYLL7JpzuPF5+FimV2lZ9f0jeq24kJjpU=
+github.com/ProtonMail/go-rfc5322 v0.5.0 h1:LbKWjgfvumYZCr8BgGyTUk3ETGkFLAjQdkuSUpZ5CcE=
+github.com/ProtonMail/go-rfc5322 v0.5.0/go.mod h1:mzZWlMWnQJuYLL7JpzuPF5+FimV2lZ9f0jeq24kJjpU=
 github.com/ProtonMail/go-vcard v0.0.0-20180326232728-33aaa0a0c8a5 h1:Uga1DHFN4GUxuDQr0F71tpi8I9HqPIlZodZAI1lR6VQ=
 github.com/ProtonMail/go-vcard v0.0.0-20180326232728-33aaa0a0c8a5/go.mod h1:oeP9CMN+ajWp5jKp1kue5daJNwMMxLF+ujPaUIoJWlA=
 github.com/ProtonMail/gopenpgp/v2 v2.0.1 h1:x0uvDhry5WzoHeJO4J3dgMLhG4Z9PeBJ2O+sDOY0LcU=
diff --git a/unreleased.md b/unreleased.md
index b74de3a8..87662e77 100644
--- a/unreleased.md
+++ b/unreleased.md
@@ -16,7 +16,7 @@ Changelog [format](http://keepachangelog.com/en/1.0.0/)
 * GODT-945 Fix panic in integration tests caused by concurrent map writes.
 
 ### Changed
-* GODT-858 Bump go-rfc5322 dependency to v0.4.0 to handle some invalid RFC5322 groups.
+* GODT-858 Bump go-rfc5322 dependency to v0.5.0 to handle some invalid RFC5322 groups and add support for semicolon delimiter in address-list.
 * GODT-923 Fix listener locking.
 
 ### Changed