diff --git a/Cargo.lock b/Cargo.lock
index 5c97113..147b5a2 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -275,7 +275,7 @@ checksum = "cf54715a573b99ac80df0bc206da022bcd442c974952c7b9720069370852e21f"
 
 [[package]]
 name = "rusty_alloc"
-version = "2.0.0"
+version = "2.0.1"
 dependencies = [
  "libc",
  "loom",
@@ -286,14 +286,14 @@ dependencies = [
 
 [[package]]
 name = "rusty_alloc-api"
-version = "2.0.0"
+version = "2.0.1"
 dependencies = [
  "rusty_alloc",
 ]
 
 [[package]]
 name = "rusty_alloc-bench"
-version = "2.0.0"
+version = "2.0.1"
 dependencies = [
  "libloading",
  "rusty_alloc",
@@ -302,14 +302,14 @@ dependencies = [
 
 [[package]]
 name = "rusty_alloc-ffi"
-version = "2.0.0"
+version = "2.0.1"
 dependencies = [
  "rusty_alloc",
 ]
 
 [[package]]
 name = "rusty_alloc-override"
-version = "2.0.0"
+version = "2.0.1"
 dependencies = [
  "rusty_alloc",
  "rusty_alloc-ffi",
@@ -317,7 +317,7 @@ dependencies = [
 
 [[package]]
 name = "rusty_alloc-wasm"
-version = "2.0.0"
+version = "2.0.1"
 dependencies = [
  "rusty_alloc",
 ]
diff --git a/Cargo.toml b/Cargo.toml
index fa715fe..7a1743a 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -132,7 +132,7 @@ members = [
 # different files that never got the section. Fixed here, in both, and
 # verified by extracting the packaged `.crate` before publishing rather than
 # checking the live page afterwards.
-version = "2.0.0"
+version = "2.0.1"
 edition = "2024"
 # MSRV. Declared for the first time in 1.0.1 because this release genuinely
 # needs it: `asm!` label blocks (`asm_goto`, stable 1.87) carry the free path's
diff --git a/crates/rusty_alloc/CHANGELOG.md b/crates/rusty_alloc/CHANGELOG.md
index f153d3f..ac47a9d 100644
--- a/crates/rusty_alloc/CHANGELOG.md
+++ b/crates/rusty_alloc/CHANGELOG.md
@@ -7,6 +7,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [2.0.1](https://github.com/Remade-With-Rust/rusty_alloc/compare/rusty_alloc-v2.0.0...rusty_alloc-v2.0.1) - 2026-09-08
+
 ### Added
 
 - `prim::fixed::MIN_REGION` and `prim::fixed::usable_bytes(base, len)` — a
@@ -41,6 +43,14 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   All four reported by the first outside firmware to adopt 2.0.0
   (`docs/plans/embedded-adoption.md`).
 
+### Changed
+
+- `portable-atomic` is `optional` and enabled by `std`, so it is pulled only
+  where it is reachable — a target without 64-bit atomics that also has `std`.
+  A `no_std` firmware was fetching and compiling a crate it then discarded at
+  link time. Costs nothing on the device either way; it buys an accurate
+  dependency graph in an SBOM or a `cargo audit`.
+
 ## [2.0.0](https://github.com/Remade-With-Rust/rusty_alloc/compare/rusty_alloc-v1.1.6...rusty_alloc-v2.0.0) - 2026-09-07
 
 ### Breaking
diff --git a/crates/rusty_alloc_api/Cargo.toml b/crates/rusty_alloc_api/Cargo.toml
index 0d75c8a..7d9d1d7 100644
--- a/crates/rusty_alloc_api/Cargo.toml
+++ b/crates/rusty_alloc_api/Cargo.toml
@@ -14,7 +14,7 @@ readme = "README.md"
 [dependencies]
 # A published crate needs a VERSION alongside the path: the path is what the
 # workspace builds against, the version is what crates.io resolves.
-rusty_alloc = { path = "../rusty_alloc", version = "2.0.0", default-features = false }
+rusty_alloc = { path = "../rusty_alloc", version = "2.0.1", default-features = false }
 
 [features]
 # Mirrors the core's (P3, docs/plans/small-metal.md). Default-on, so every