diff --git a/src/stage0.txt b/src/stage0.txt
index 187c56d7889ea..4be9e3e57baac 100644
--- a/src/stage0.txt
+++ b/src/stage0.txt
@@ -12,5 +12,5 @@
 # tarball for a stable release you'll likely see `1.x.0-$date` where `1.x.0` was
 # released on `$date`
 
-rustc: beta-2016-12-16
-cargo: fbeea902d2c9a5be6d99cc35681565d8f7832592
+rustc: beta-2016-12-20
+cargo: bfee18f73287687c543bda8c35e4e33808792715