diff --git a/src/doc/rustc-dev-guide/rust-version b/src/doc/rustc-dev-guide/rust-version
index 5e4266f61da2..0d889a5d5b99 100644
--- a/src/doc/rustc-dev-guide/rust-version
+++ b/src/doc/rustc-dev-guide/rust-version
@@ -1 +1 @@
-414482f6a0d4e7290f614300581a0b55442552a3
+e42bbfe1f7c26f8760a99c4b1f27d33aba1040bb