diff --git a/bootloader/rustsbi-k210.bin b/bootloader/rustsbi-k210.bin
index 27987d6..c53ed1f 100755
Binary files a/bootloader/rustsbi-k210.bin and b/bootloader/rustsbi-k210.bin differ
diff --git a/bootloader/rustsbi-qemu.bin b/bootloader/rustsbi-qemu.bin
index 0e61b8e..ddbf336 100755
Binary files a/bootloader/rustsbi-qemu.bin and b/bootloader/rustsbi-qemu.bin differ
diff --git a/rust-toolchain b/rust-toolchain
index bf867e0..1c5af26 100644
--- a/rust-toolchain
+++ b/rust-toolchain
@@ -1 +1 @@
-nightly
+nightly-2021-08-25