diff --git a/Cargo.toml b/Cargo.toml
index a9cc293..48c730f 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -38,7 +38,7 @@ parking_lot = "0.12"
 ring = "0.16"
 bytes = "1"
 hyper = {version="1.0", features=["full"], optional=true}
-headers = "0.3"
+headers = "0.4"
 hyper-tls = {version="0.6", optional=true}
 tokio-tungstenite = {version="0.20", optional=true}