diff --git a/src/libstd/lib.rs b/src/libstd/lib.rs
index 7cb07e8e551..a2f6381feff 100644
--- a/src/libstd/lib.rs
+++ b/src/libstd/lib.rs
@@ -57,8 +57,6 @@
 // Don't link to std. We are std.
 #![no_std]
 
-// NOTE: remove after snapshot
-#![allow(unknown_features)]
 #![deny(missing_doc)]
 
 // When testing libstd, bring in libuv as the I/O backend so tests can print
diff --git a/src/snapshots.txt b/src/snapshots.txt
index 7f3b9d6b832..a9d8247608c 100644
--- a/src/snapshots.txt
+++ b/src/snapshots.txt
@@ -1,3 +1,11 @@
+S 2014-04-23 b5dd3f0
+  freebsd-x86_64 b6ccb045b9bea4cc4781bc128e047a1c68dc2c17
+  linux-i386 9e4e8d2bc70ff5b8db21169f762cb20c4dba6c2c
+  linux-x86_64 3367b8e1a0295c8124c26c5c627343ebe9a0ac5d
+  macos-i386 3029be6d6cc7a34b8a03a0a659b427c2916a8962
+  macos-x86_64 2de6d89ac8063588a37059140a602f028f2cc2ea
+  winnt-i386 021b39bc24b293f166aa329224f08cc5dedd5769
+
 S 2014-04-15 349d66a
   freebsd-x86_64 0e8078e24b3f86481c5ae0a47a15e5ed2703f241
   linux-i386 b4e5d104fc2b1eb0236b662ab3cbbb729f789bd6