diff --git a/rust-toolchain b/rust-toolchain
index d4d39d43..86d5c15d 100644
--- a/rust-toolchain
+++ b/rust-toolchain
@@ -1 +1 @@
-nightly-2021-10-05
\ No newline at end of file
+nightly-2021-09-10
\ No newline at end of file
diff --git a/rust-toolchain.toml b/rust-toolchain.toml
index 4d5f7afd..b05a1056 100644
--- a/rust-toolchain.toml
+++ b/rust-toolchain.toml
@@ -1,2 +1,2 @@
 [toolchain]
-channel = "nightly-2021-10-05"
\ No newline at end of file
+channel = "nightly-2021-09-10"
\ No newline at end of file