diff --git a/openssl-sys/src/lib.rs b/openssl-sys/src/lib.rs
index 56fa3484..92d88052 100644
--- a/openssl-sys/src/lib.rs
+++ b/openssl-sys/src/lib.rs
@@ -1,6 +1,6 @@
 #![allow(non_camel_case_types, non_upper_case_globals, non_snake_case)]
 #![allow(dead_code)]
-#![feature(core, io, libc, path, std_misc, env)]
+#![feature(core, old_io, libc, old_path, std_misc, env)]
 #![doc(html_root_url="https://sfackler.github.io/rust-openssl/doc/openssl-sys")]
 
 extern crate libc;
diff --git a/openssl/src/lib.rs b/openssl/src/lib.rs
index 11234c2f..4fa57126 100644
--- a/openssl/src/lib.rs
+++ b/openssl/src/lib.rs
@@ -1,4 +1,4 @@
-#![feature(unsafe_destructor, core, io, std_misc, libc, hash, path)]
+#![feature(unsafe_destructor, core, old_io, std_misc, libc, hash, old_path)]
 #![crate_name="openssl"]
 #![crate_type="rlib"]
 #![crate_type="dylib"]