diff --git a/Cargo.toml b/Cargo.toml
index 4ecc0e1..489e22d 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -31,14 +31,14 @@ regex = "1.0"
 bufstream = "0.1"
 imap-proto = "0.10.0"
 nom = "5.0"
-base64 = "0.11"
+base64 = "0.12"
 chrono = "0.4"
 lazy_static = "1.4"
 
 [dev-dependencies]
 lettre = "0.9"
 lettre_email = "0.9"
-rustls-connector = "0.8.0"
+rustls-connector = "0.10.0"
 
 [[example]]
 name = "basic"