diff --git a/lettre_email/Cargo.toml b/lettre_email/Cargo.toml
index 10d1723..35cf5f5 100644
--- a/lettre_email/Cargo.toml
+++ b/lettre_email/Cargo.toml
@@ -23,7 +23,7 @@ lettre = { version = "^0.9", path = "../lettre", features = ["smtp-transport"] }
 glob = "0.3"
 
 [dependencies]
-email = "^0.0.20"
+email = "^0.0.21"
 mime = "^0.3"
 time = "^0.1"
 uuid = { version = "^0.7", features = ["v4"] }