diff --git a/Cargo.toml b/Cargo.toml
index 1d2e5e3a..39448398 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -43,7 +43,7 @@ version = "0.2.11"
 
 [dependencies.rustls]
 optional = true
-version = "0.21.0"
+version = "0.21.6"
 
 [dependencies.rustls-native-certs]
 optional = true