diff --git a/Cargo.toml b/Cargo.toml
index cd3a37b..9928549 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -46,7 +46,7 @@ version = "0.2.3"
 
 [dependencies.rustls]
 optional = true
-version = "0.20.0"
+version = "0.21.0"
 
 [dependencies.rustls-native-certs]
 optional = true