diff --git a/14_exceptions_part2_peripheral_IRQs/README.md b/14_exceptions_part2_peripheral_IRQs/README.md
index 3646b384..ee7f1597 100644
--- a/14_exceptions_part2_peripheral_IRQs/README.md
+++ b/14_exceptions_part2_peripheral_IRQs/README.md
@@ -2568,7 +2568,7 @@ diff -uNr 13_integrated_testing/src/lib.rs 14_exceptions_part2_peripheral_IRQs/s
  //! [timer interface]: ../libkernel/time/interface/trait.TimeManager.html
  //!
  //! # Code organization and architecture
-@@ -107,8 +112,12 @@
+@@ -107,8 +112,11 @@
  //! - `crate::bsp::memory::*`
 
  #![allow(incomplete_features)]
@@ -2576,13 +2576,12 @@ diff -uNr 13_integrated_testing/src/lib.rs 14_exceptions_part2_peripheral_IRQs/s
 +#![feature(const_fn)]
  #![feature(const_generics)]
 -#![feature(custom_inner_attributes)]
-+#![feature(const_if_match)]
 +#![feature(const_panic)]
 +#![feature(core_intrinsics)]
  #![feature(format_args_nl)]
  #![feature(global_asm)]
  #![feature(linkage)]
-@@ -137,6 +146,7 @@
+@@ -137,6 +145,7 @@
  pub mod exception;
  pub mod memory;
  pub mod print;
diff --git a/14_exceptions_part2_peripheral_IRQs/src/lib.rs b/14_exceptions_part2_peripheral_IRQs/src/lib.rs
index c6a431c3..e171017c 100644
--- a/14_exceptions_part2_peripheral_IRQs/src/lib.rs
+++ b/14_exceptions_part2_peripheral_IRQs/src/lib.rs
@@ -115,7 +115,6 @@
 #![feature(asm)]
 #![feature(const_fn)]
 #![feature(const_generics)]
-#![feature(const_if_match)]
 #![feature(const_panic)]
 #![feature(core_intrinsics)]
 #![feature(format_args_nl)]
diff --git a/README.CN.md b/README.CN.md
index ca4b1cf4..7617a6b8 100644
--- a/README.CN.md
+++ b/README.CN.md
@@ -52,8 +52,8 @@ _带上我最诚挚的问候,<br>Andre ([@andre-richter])_
 3. 安装正确的`Rust`工具链:
    1. 如果你已经安装了一个版本的Rust:
       ```bash
-      rustup toolchain add nightly-2020-06-28
-      rustup default nightly-2020-06-28
+      rustup toolchain add nightly-2020-06-30
+      rustup default nightly-2020-06-30
       rustup component add llvm-tools-preview
       rustup target add aarch64-unknown-none-softfloat
       cargo install cargo-binutils
@@ -62,7 +62,7 @@ _带上我最诚挚的问候,<br>Andre ([@andre-richter])_
    2. 如果你想要全新安装:
       ```bash
       curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- \
-          --default-toolchain nightly-2020-06-28                           \
+          --default-toolchain nightly-2020-06-30                           \
           --component llvm-tools-preview
 
       source $HOME/.cargo/env
diff --git a/README.md b/README.md
index a4456ddd..1db0f5ca 100644
--- a/README.md
+++ b/README.md
@@ -68,8 +68,8 @@ other Unix flavors such as **macOS**, but this is only _experimental_.
 1. Install a suitable `Rust` toolchain:
    1. If you already have a version of Rust installed:
       ```bash
-      rustup toolchain add nightly-2020-06-28
-      rustup default nightly-2020-06-28
+      rustup toolchain add nightly-2020-06-30
+      rustup default nightly-2020-06-30
       rustup component add llvm-tools-preview
       rustup target add aarch64-unknown-none-softfloat
       cargo install cargo-binutils
@@ -78,7 +78,7 @@ other Unix flavors such as **macOS**, but this is only _experimental_.
    2. If you need a fresh install:
       ```bash
       curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- \
-          --default-toolchain nightly-2020-06-28                           \
+          --default-toolchain nightly-2020-06-30                           \
           --component llvm-tools-preview
 
       source $HOME/.cargo/env