diff --git a/.travis.yml b/.travis.yml
index d7aba84..c3c48ef 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,2 +1,3 @@
 
 language: rust
+rust: nightly
diff --git a/src/lib.rs b/src/lib.rs
index b89c78b..cba6988 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -13,6 +13,8 @@
 //!
 #![feature(test)]
 #![feature(core)]
+#![feature(raw)]
+#![feature(nonzero)]
 
 extern crate mmap;
 extern crate iobuf;