diff --git a/Cargo.toml b/Cargo.toml
index ccfe43a..f5b4d62 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -21,7 +21,7 @@ asynchronous_codec = ["std", "bytes", "asynchronous-codec"]
 bytes = { version = "1", optional = true }
 futures-io = { version = "0.3.4", optional = true }
 futures-util = { version = "0.3.4", features = ["io"], optional = true }
-asynchronous-codec = { version = "0.5", optional = true }
+asynchronous-codec = { version = "0.6", optional = true }
 tokio-util = { version = "0.6", features = ["codec"], optional = true }
 nom = { version = "6", optional = true }