diff --git a/rust-toolchain b/rust-toolchain
index 3e2f5f2cacd9ef54581beaad1de45ff60d0a020c..40973dae63e277fdf25b72ecab8e4b5f6964605b 100644
--- a/rust-toolchain
+++ b/rust-toolchain
@@ -1 +1 @@
-nightly-2021-03-15
+nightly-2020-07-27