diff --git a/embassy-executor/tests/ui/spawn_nonsend.stderr b/embassy-executor/tests/ui/spawn_nonsend.stderr
index 25bd7d78d..5a3131602 100644
--- a/embassy-executor/tests/ui/spawn_nonsend.stderr
+++ b/embassy-executor/tests/ui/spawn_nonsend.stderr
@@ -9,7 +9,7 @@ warning: unused import: `core::future::Future`
 error[E0277]: `*mut ()` cannot be sent between threads safely
   --> tests/ui/spawn_nonsend.rs:13:13
    |
-7  | #[embassy_executor::task]
+ 7 | #[embassy_executor::task]
    | ------------------------- within this `impl Sized`
 ...
 13 |     s.spawn(task(core::ptr::null_mut()).unwrap());
@@ -21,7 +21,7 @@ error[E0277]: `*mut ()` cannot be sent between threads safely
 note: required because it's used within this closure
   --> tests/ui/spawn_nonsend.rs:7:1
    |
-7  | #[embassy_executor::task]
+ 7 | #[embassy_executor::task]
    | ^^^^^^^^^^^^^^^^^^^^^^^^^
 note: required because it appears within the type `impl Sized`
   --> src/raw/mod.rs
@@ -31,7 +31,7 @@ note: required because it appears within the type `impl Sized`
 note: required because it appears within the type `impl Sized`
   --> tests/ui/spawn_nonsend.rs:7:1
    |
-7  | #[embassy_executor::task]
+ 7 | #[embassy_executor::task]
    | ^^^^^^^^^^^^^^^^^^^^^^^^^
 note: required by a bound in `SendSpawner::spawn`
   --> src/spawner.rs
diff --git a/embassy-executor/tests/ui/unsafe_op_in_unsafe_task.stderr b/embassy-executor/tests/ui/unsafe_op_in_unsafe_task.stderr
index d987a4b95..033395584 100644
--- a/embassy-executor/tests/ui/unsafe_op_in_unsafe_task.stderr
+++ b/embassy-executor/tests/ui/unsafe_op_in_unsafe_task.stderr
@@ -4,7 +4,7 @@ error[E0133]: call to unsafe function `std::ptr::const_ptr::<impl *const T>::rea
 7 |     (&x as *const i32).read();
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^ call to unsafe function
   |
-  = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2024/unsafe-op-in-unsafe-fn.html>
+  = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/unsafe-op-in-unsafe-fn.html>
   = note: consult the function's documentation for information on how to avoid undefined behavior
 note: an unsafe function restricts its caller, but its body is safe by default
  --> tests/ui/unsafe_op_in_unsafe_task.rs:5:1
diff --git a/embassy-sync/tests/ui/sync_impl/lazy_lock_function.stderr b/embassy-sync/tests/ui/sync_impl/lazy_lock_function.stderr
index daf79ad28..417fb8e31 100644
--- a/embassy-sync/tests/ui/sync_impl/lazy_lock_function.stderr
+++ b/embassy-sync/tests/ui/sync_impl/lazy_lock_function.stderr
@@ -1,10 +1,10 @@
 error[E0277]: `*const u8` cannot be shared between threads safely
   --> tests/ui/sync_impl/lazy_lock_function.rs:8:16
    |
-6  |     let closure_capturing_non_sync_variable = || unsafe { core::ptr::read(x_ptr) };
+ 6 |     let closure_capturing_non_sync_variable = || unsafe { core::ptr::read(x_ptr) };
    |                                               -- within this `{closure@$DIR/tests/ui/sync_impl/lazy_lock_function.rs:6:47: 6:49}`
-7  |
-8  |     check_sync(LazyLock::new(closure_capturing_non_sync_variable));
+ 7 |
+ 8 |     check_sync(LazyLock::new(closure_capturing_non_sync_variable));
    |     ---------- ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `*const u8` cannot be shared between threads safely
    |     |
    |     required by a bound introduced by this call
@@ -14,7 +14,7 @@ error[E0277]: `*const u8` cannot be shared between threads safely
 note: required because it's used within this closure
   --> tests/ui/sync_impl/lazy_lock_function.rs:6:47
    |
-6  |     let closure_capturing_non_sync_variable = || unsafe { core::ptr::read(x_ptr) };
+ 6 |     let closure_capturing_non_sync_variable = || unsafe { core::ptr::read(x_ptr) };
    |                                               ^^
    = note: required for `embassy_sync::lazy_lock::LazyLock<u8, {closure@$DIR/tests/ui/sync_impl/lazy_lock_function.rs:6:47: 6:49}>` to implement `Sync`
 note: required by a bound in `check_sync`
diff --git a/rust-toolchain-nightly.toml b/rust-toolchain-nightly.toml
index 411cc6946..d3e88c7e1 100644
--- a/rust-toolchain-nightly.toml
+++ b/rust-toolchain-nightly.toml
@@ -1,5 +1,5 @@
 [toolchain]
-channel = "nightly-2025-06-29"
+channel = "nightly-2025-08-05"
 components = [ "rust-src", "rustfmt", "llvm-tools", "miri" ]
 targets = [
     "thumbv7em-none-eabi",
diff --git a/rust-toolchain.toml b/rust-toolchain.toml
index e24864037..5d925c934 100644
--- a/rust-toolchain.toml
+++ b/rust-toolchain.toml
@@ -1,5 +1,5 @@
 [toolchain]
-channel = "1.88"
+channel = "1.90"
 components = [ "rust-src", "rustfmt", "llvm-tools" ]
 targets = [
     "thumbv7em-none-eabi",