diff --git a/Cargo.toml b/Cargo.toml
index d4d08b23..e3ca6e34 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -16,7 +16,7 @@ bitcoin_hashes = { version = "0.20", default-features = false }
 hex-conservative = { version = "1.0.0", default-features = false }
 serde = { version = "1.0", features = ["derive"], optional = true }
 hashbrown = "0.16.1"
-bitcoin-io = { version = "0.3.0", default-features = false, features = ["alloc"] }
+bitcoin-io = { version = "0.5.0", default-features = false, features = ["alloc"] }
 
 [dev-dependencies]
 serde = { version = "1.0", features = ["derive"] }