diff --git a/substrate/tendermint/machine/Cargo.toml b/substrate/tendermint/machine/Cargo.toml
index 7fc41bbc..17de1434 100644
--- a/substrate/tendermint/machine/Cargo.toml
+++ b/substrate/tendermint/machine/Cargo.toml
@@ -15,7 +15,7 @@ parity-scale-codec = { version = "3.2", features = ["derive"] }
 
 tokio = { version = "1", features = ["macros", "sync", "time", "rt"] }
 
-sp-runtime = { git = "https://github.com/serai-dex/substrate", optional = true }
+sp-runtime = { git = "https://github.com/serai-dex/substrate", version = "6.0.0", optional = true }
 
 [features]
 substrate = ["sp-runtime"]