diff --git a/patches/libtock-rs/02-rust2021.patch b/patches/libtock-rs/02-rust2021.patch
deleted file mode 100644
index 22b6e6b..0000000
--- a/patches/libtock-rs/02-rust2021.patch
+++ /dev/null
@@ -1,38 +0,0 @@
-diff --git a/core/src/entry_point/start_item_arm.rs b/core/src/entry_point/start_item_arm.rs
-index 5d88d6b..4cdaef9 100644
---- a/core/src/entry_point/start_item_arm.rs
-+++ b/core/src/entry_point/start_item_arm.rs
-@@ -20,16 +20,16 @@ pub unsafe extern "C" fn _start() -> ! {
-         subw r4, pc, #4    // r4 = pc
-         ldr r5, =.start   // r5 = address of .start
-         cmp r4, r5
--        beq .Lstack_init  // Jump to stack initialization if pc was correct
-+        beq 2f  // Jump to stack initialization if pc was correct
-         movw r0, #8       // LowLevelDebug driver number
-         movw r1, #1       // LowLevelDebug 'print status code' command
-         movw r2, #2       // LowLevelDebug relocation failed status code
-         svc 2             // command() syscall
--        .Lyield_loop:
-+        1:
-         svc 0             // yield() syscall (in infinite loop)
--        b .Lyield_loop
-+        b 1b
- 
--        .Lstack_init:
-+        2:
-         // Compute the stacktop (stack_start). The stacktop is computed as
-         // stack_size + mem_start plus padding to align the stack to a multiple
-         // of 8 bytes. The 8 byte alignment is to follow ARM AAPCS:
-diff --git a/rust-toolchain b/rust-toolchain
-index 1674405..64ed934 100644
---- a/rust-toolchain
-+++ b/rust-toolchain
-@@ -1,7 +1,7 @@
- [toolchain]
- # See https://rust-lang.github.io/rustup-components-history/ for a list of
- # recently nightlies and what components are available for them.
--channel = "nightly-2021-03-25"
-+channel = "nightly-2021-10-21"
- components = ["clippy", "miri", "rustfmt"]
- targets = ["thumbv7em-none-eabi",
-            "riscv32imac-unknown-none-elf",