diff --git a/README.md b/README.md
index 47510a6422f..d3888532607 100644
--- a/README.md
+++ b/README.md
@@ -8,7 +8,7 @@ against a released version of Rust will not work, nor will the Rust
 'master' branch. The commit below will *probably* work. If it does not
 then the topic in #servo might know better.
 
-* Last known-good Rust commit: 624fbbd
+* Last known-good Rust commit: 54ae377ec26ed47bbb627bdcb58bb10658cf03c4
 
 [rust]: http://www.rust-lang.org