diff --git a/Cargo.toml b/Cargo.toml
index ba281e1..bca430c 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -11,7 +11,7 @@ keywords = ["ethereum"]
 categories = ["cryptography::cryptocurrencies"]
 
 [dependencies]
-tree_hash = "0.8.0"
+tree_hash = "0.9"
 ethereum_serde_utils = "0.7.0"
 ethereum_ssz = "0.8.0"
 serde = "1.0.0"