diff --git a/src/libio/Cargo.toml b/src/libio/Cargo.toml
index 6aacf0c4..c02f08ab 100644
--- a/src/libio/Cargo.toml
+++ b/src/libio/Cargo.toml
@@ -8,9 +8,10 @@ name = "io"
 path = "lib.rs"
 
 [dependencies]
-failure = { version = "0.1", default-features = false }
-failure_derive = { version = "0.1", default-features = false }
+core_io = { version = "0.1", features = ["collections"] }
 byteorder = { version = "1.0", default-features = false, optional = true }
 
+libsupport_zynq = { default-features = false, features = ["alloc_core"], git = "https://git.m-labs.hk/M-Labs/zynq-rs.git" }
+
 [features]
 alloc = []
diff --git a/src/libio/lib.rs b/src/libio/lib.rs
index b10c4134..b3e8e6b9 100644
--- a/src/libio/lib.rs
+++ b/src/libio/lib.rs
@@ -2,12 +2,12 @@
 #![feature(never_type)]
 #![cfg_attr(feature = "alloc", feature(alloc))]
 
-extern crate failure;
-#[macro_use]
-extern crate failure_derive;
+extern crate alloc;
+extern crate core_io;
+
 #[cfg(feature = "alloc")]
 #[macro_use]
-extern crate alloc;
+use alloc;
 #[cfg(feature = "byteorder")]
 extern crate byteorder;
 
@@ -21,12 +21,9 @@ pub use proto::{ProtoRead, ProtoWrite};
 #[cfg(all(feature = "byteorder", feature = "alloc"))]
 pub use proto::ReadStringError;
 
-#[derive(Fail, Debug, Clone, PartialEq)]
 pub enum Error<T> {
-    #[fail(display = "unexpected end of stream")]
     UnexpectedEnd,
-    #[fail(display = "{}", _0)]
-    Other(#[cause] T)
+    Other(T)
 }
 
 impl<T> From<T> for Error<T> {