diff --git a/implementations/rust/Cargo.toml b/implementations/rust/Cargo.toml
index c0134f2..bcb54e2 100644
--- a/implementations/rust/Cargo.toml
+++ b/implementations/rust/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "preserves"
-version = "0.1.1"
+version = "0.1.2"
 authors = ["Tony Garnock-Jones <tonyg@leastfixedpoint.com>"]
 edition = "2018"
 description = "Implementation of the Preserves serialization format via serde."
diff --git a/implementations/rust/src/value/encoder.rs b/implementations/rust/src/value/encoder.rs
index 53fe0c5..bfdb848 100644
--- a/implementations/rust/src/value/encoder.rs
+++ b/implementations/rust/src/value/encoder.rs
@@ -2,9 +2,9 @@ use std::io::Write;
 use crate::value::value::{Value, AValue, Float, Double};
 use num::bigint::BigInt;
 use num::cast::ToPrimitive;
-use std::io::Error;
 use crate::value::constants::{Op, AtomMinor, CompoundMinor};
 
+pub type Error = std::io::Error;
 pub type Result = std::result::Result<(), Error>;
 
 pub type EncodePlaceholderMap = std::collections::BTreeMap<Value, usize>;