diff --git a/src/doc/rustc-dev-guide/rust-version b/src/doc/rustc-dev-guide/rust-version
index e69de29bb2d1..876c32dcf434 100644
--- a/src/doc/rustc-dev-guide/rust-version
+++ b/src/doc/rustc-dev-guide/rust-version
@@ -0,0 +1 @@
+dcfa38fe234de9304169afc6638e81d0dd222c06