diff --git a/rust-toolchain b/rust-toolchain
index 360570b3ae7..b4a45874eaf 100644
--- a/rust-toolchain
+++ b/rust-toolchain
@@ -1,3 +1,3 @@
 [toolchain]
-channel = "nightly-2021-09-19"
+channel = "nightly-2021-09-27"
 components = ["rust-src", "rustc-dev", "llvm-tools-preview"]