diff --git a/macros/src/lib.rs b/macros/src/lib.rs
index c33d01cb..d68419d8 100644
--- a/macros/src/lib.rs
+++ b/macros/src/lib.rs
@@ -12,7 +12,6 @@
 
 #![feature(plugin_registrar, quote, old_orphan_check)]
 #![deny(warnings)]
-#![allow(unstable)]
 
 extern crate syntax;
 extern crate rustc;
diff --git a/macros/src/named_entities.rs b/macros/src/named_entities.rs
index f1780cb3..25448606 100644
--- a/macros/src/named_entities.rs
+++ b/macros/src/named_entities.rs
@@ -9,7 +9,7 @@
 
 #![allow(unused_imports)]  // for quotes
 
-use std::io;
+use std::old_io;
 use std::path;
 use std::str::FromStr;
 use serialize::json;
@@ -101,7 +101,7 @@ pub fn expand(cx: &mut ExtCtxt, sp: Span, tt: &[TokenTree]) -> Box<MacResult+'st
     let json_path = mod_path.dir_path().join(json_filename);
 
     // Open the JSON file, parse it, and build the map from names to characters.
-    let mut json_file = expect!(cx, sp, io::File::open(&json_path).ok(),
+    let mut json_file = expect!(cx, sp, old_io::File::open(&json_path).ok(),
         "can't open JSON file");
     let js = expect!(cx, sp, json::from_reader(&mut json_file as &mut Reader).ok(),
         "can't parse JSON file");
diff --git a/src/lib.rs b/src/lib.rs
index 1417dccf..dd8e615e 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -12,7 +12,7 @@
 
 #![feature(plugin, old_impl_check, int_uint, box_syntax)]
 #![deny(warnings)]
-#![allow(unused_parens, unstable)]
+#![allow(unused_parens)]
 
 // Don't implicitly pull in things from std::*
 // This helps us make a C-friendly library.
diff --git a/src/serialize/mod.rs b/src/serialize/mod.rs
index a0d3fbe0..5d5cb9e8 100644
--- a/src/serialize/mod.rs
+++ b/src/serialize/mod.rs
@@ -9,7 +9,7 @@
 
 use core::prelude::*;
 
-use std::io::{Writer, IoResult};
+use std::old_io::{Writer, IoResult};
 use core::default::Default;
 use collections::vec::Vec;
 
diff --git a/src/sink/owned_dom.rs b/src/sink/owned_dom.rs
index 4ea02fd8..8cff8b96 100644
--- a/src/sink/owned_dom.rs
+++ b/src/sink/owned_dom.rs
@@ -7,6 +7,7 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
+#![allow(unused_attributes)]
 #![experimental="This module uses unsafe code, has not been thoroughly \
                  audited, and the performance gains vs. RcDom have not \
                  been demonstrated"]
@@ -37,7 +38,7 @@ use alloc::boxed::Box;
 use collections::vec::Vec;
 use collections::string::String;
 use std::string::CowString;
-use std::io::{Writer, IoResult};
+use std::old_io::{Writer, IoResult};
 use std::collections::HashSet;
 use std::ops::{Deref, DerefMut};
 
diff --git a/src/sink/rcdom.rs b/src/sink/rcdom.rs
index 48f4104e..5465cc57 100644
--- a/src/sink/rcdom.rs
+++ b/src/sink/rcdom.rs
@@ -28,7 +28,7 @@ use alloc::rc::{Rc, Weak};
 use collections::vec::Vec;
 use collections::string::String;
 use std::string::CowString;
-use std::io::{Writer, IoResult};
+use std::old_io::{Writer, IoResult};
 use std::ops::DerefMut;
 
 use string_cache::QualName;