diff --git a/CHANGELOG.md b/CHANGELOG.md
index d7ba4e3..1b21855 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,12 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## Unreleased
+
+## Fixed
+- Update dependency `github.com/ProtonMail/go-mime`. It makes the parsing 
+of MIME messages more flexible to messages with no specified charsets.
+
 ## [2.4.5] 2022-03-01
 
 ### Added
diff --git a/go.mod b/go.mod
index 7e9df1f..696ecea 100644
--- a/go.mod
+++ b/go.mod
@@ -4,7 +4,7 @@ go 1.15
 
 require (
 	github.com/ProtonMail/go-crypto v0.0.0-20220113124808-70ae35bab23f
-	github.com/ProtonMail/go-mime v0.0.0-20190923161245-9b5a4261663a
+	github.com/ProtonMail/go-mime v0.0.0-20220302105931-303f85f7fe0f
 	github.com/pkg/errors v0.9.1
 	github.com/stretchr/testify v1.4.0
 	golang.org/x/crypto v0.0.0-20210322153248-0c34fe9e7dc2
diff --git a/go.sum b/go.sum
index 576e333..eda5ff7 100644
--- a/go.sum
+++ b/go.sum
@@ -3,6 +3,8 @@ github.com/ProtonMail/go-crypto v0.0.0-20220113124808-70ae35bab23f h1:J2FzIrXN82
 github.com/ProtonMail/go-crypto v0.0.0-20220113124808-70ae35bab23f/go.mod h1:z4/9nQmJSSwwds7ejkxaJwO37dru3geImFUdJlaLzQo=
 github.com/ProtonMail/go-mime v0.0.0-20190923161245-9b5a4261663a h1:W6RrgN/sTxg1msqzFFb+G80MFmpjMw61IU+slm+wln4=
 github.com/ProtonMail/go-mime v0.0.0-20190923161245-9b5a4261663a/go.mod h1:NYt+V3/4rEeDuaev/zw1zCq8uqVEuPHzDPo3OZrlGJ4=
+github.com/ProtonMail/go-mime v0.0.0-20220302105931-303f85f7fe0f h1:CGq7OieOz3wyQJ1fO8S0eO9TCW1JyvLrf8fhzz1i8ko=
+github.com/ProtonMail/go-mime v0.0.0-20220302105931-303f85f7fe0f/go.mod h1:NYt+V3/4rEeDuaev/zw1zCq8uqVEuPHzDPo3OZrlGJ4=
 github.com/ProtonMail/go-mobile v0.0.0-20210326110230-f181c70e4e2b h1:XVeh08xp93T+xK6rzpCSQTZ+LwEo+ASHvOifrQ5ZgEE=
 github.com/ProtonMail/go-mobile v0.0.0-20210326110230-f181c70e4e2b/go.mod h1:Naot1YTww71UdzhpocCmKjmnb8+3Jlcww/TW6kP6/yc=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=