diff --git a/README.md b/README.md
index e97de711..e28e783e 100644
--- a/README.md
+++ b/README.md
@@ -5,12 +5,8 @@ rCore-Tutorial version 3.x
 
 ### Binaries
 
-* rustc 1.56.0-nightly (08095fc1f 2021-07-26)
+* rustc 1.56.0-nightly (b03ccace5 2021-08-24)
 
 * qemu: 5.0.0
 
-* rustsbi-lib: 0.2.0-alpha.4
-
-  rustsbi-qemu: d4968dd2
-
-  rustsbi-k210: b689314e
+* rustsbi: qemu[7d71bfb7] k210[563144b0]
diff --git a/bootloader/rustsbi-k210.bin b/bootloader/rustsbi-k210.bin
index 27987d68..c53ed1fc 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 0e61b8ea..ddbf336a 100755
Binary files a/bootloader/rustsbi-qemu.bin and b/bootloader/rustsbi-qemu.bin differ
diff --git a/rust-toolchain b/rust-toolchain
index bf867e0a..1c5af266 100644
--- a/rust-toolchain
+++ b/rust-toolchain
@@ -1 +1 @@
-nightly
+nightly-2021-08-25
diff --git a/user/src/bin/00hello_world.rs b/user/src/bin/00hello_world.rs
index 7a11980a..242749ac 100644
--- a/user/src/bin/00hello_world.rs
+++ b/user/src/bin/00hello_world.rs
@@ -1,6 +1,6 @@
 #![no_std]
 #![no_main]
-#![feature(llvm_asm)]
+#![feature(asm)]
 
 #[macro_use]
 extern crate user_lib;
@@ -9,7 +9,7 @@ extern crate user_lib;
 fn main() -> i32 {
     println!("Hello, world!");
     unsafe {
-        llvm_asm!("sret");
+        asm!("sret");
     }
     0
 }
\ No newline at end of file
diff --git a/user/src/bin/01store_fault.rs b/user/src/bin/01store_fault.rs
index 790196b2..994d8bfd 100644
--- a/user/src/bin/01store_fault.rs
+++ b/user/src/bin/01store_fault.rs
@@ -1,6 +1,5 @@
 #![no_std]
 #![no_main]
-#![feature(llvm_asm)]
 
 #[macro_use]
 extern crate user_lib;