diff --git a/Cargo.toml b/Cargo.toml
index 2a49199b..319cb7b7 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -23,7 +23,7 @@ idna = "1.0.3"
 jsonrpc-core = "18.0.0"
 log = "0.4.6"
 parking_lot = "0.12.0"
-rlp = "0.5"
+rlp = "0.6"
 serde = { version = "1.0.90", features = ["derive"] }
 serde_json = "1.0.39"
 tiny-keccak = { version = "2.0.1", features = ["keccak"] }