diff --git a/rust-toolchain b/rust-toolchain
index bf867e0ae5..148ed93dbc 100644
--- a/rust-toolchain
+++ b/rust-toolchain
@@ -1 +1 @@
-nightly
+nightly-2020-10-25
diff --git a/setup.bat b/setup.bat
index fbf01d8449..8fdee1ca20 100644
--- a/setup.bat
+++ b/setup.bat
@@ -1,3 +1,3 @@
 setlocal
 
-rustup toolchain install nightly --component rust-src rustc-dev llvm-tools-preview
+rustup component add rust-src rustc-dev llvm-tools-preview
diff --git a/setup.sh b/setup.sh
index 023069c85a..ea2ec67c03 100755
--- a/setup.sh
+++ b/setup.sh
@@ -1,2 +1,2 @@
 #!/usr/bin/env bash
-rustup toolchain install nightly --component rust-src rustc-dev llvm-tools-preview
+rustup component add rust-src rustc-dev llvm-tools-preview