diff --git a/CHANGELOG.md b/CHANGELOG.md
index eb1da40..969d69c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,17 +4,11 @@ Released YYYY-MM-DD.
 
 ### Added
 
-* New `"allocator-api2"` feature enables use of allocator API on stable.
-  This feature uses a crate that mirrors the API of
-  unstable `allocator_api` feature.
-  If feature is enabled, references to `Bump` implement
-  `allocator_api2::Allocator`.
-  This allows `Bump` to be used as allocator for collection types from
-  `allocator-api2` and any other crates that support `allocator-api2`.
+* TODO (or remove section if none)
 
 ### Changed
 
-* The minimum supported Rust version (MSRV) is now 1.63.0.
+* TODO (or remove section if none)
 
 ### Deprecated
 
@@ -34,6 +28,25 @@ Released YYYY-MM-DD.
 
 --------------------------------------------------------------------------------
 
+## 3.13.0
+
+Released 2023-05-22.
+
+### Added
+
+* New `"allocator-api2"` feature enables the use of the allocator API on
+  stable. This feature uses a crate that mirrors the API of the unstable Rust
+  `allocator_api` feature. If the feature is enabled, references to `Bump` will
+  implement `allocator_api2::Allocator`. This allows `Bump` to be used as an
+  allocator for collection types from `allocator-api2` and any other crates that
+  support `allocator-api2`.
+
+### Changed
+
+* The minimum supported Rust version (MSRV) is now 1.63.0.
+
+--------------------------------------------------------------------------------
+
 ## 3.12.2
 
 Released 2023-05-09.
diff --git a/Cargo.toml b/Cargo.toml
index 6df1fac..32e2a53 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -8,7 +8,7 @@ license = "MIT/Apache-2.0"
 name = "bumpalo"
 readme = "README.md"
 repository = "https://github.com/fitzgen/bumpalo"
-version = "3.12.2"
+version = "3.13.0"
 exclude = ["/.github/*", "/benches", "/tests", "valgrind.supp", "bumpalo.png"]
 rust-version = "1.60.0"
 
@@ -31,7 +31,10 @@ path = "tests/try_alloc.rs"
 harness = false
 
 [dependencies]
-allocator-api2 = { version = "0.2.8", default-features = false, optional = true, features = ["alloc"] }
+# This dependency provides a version of the unstable nightly Rust `Allocator`
+# trait on stable Rust. Enabling this feature means that `bumpalo` will
+# implement its `Allocator` trait.
+allocator-api2 = { version = "0.2.8", default-features = false, optional = true }
 
 [dev-dependencies]
 quickcheck = "1.0.3"
diff --git a/README.md b/README.md
index 1b58219..6a83b8c 100644
--- a/README.md
+++ b/README.md
@@ -207,7 +207,15 @@ v.push(2);
 
 [`Allocator`]: https://doc.rust-lang.org/std/alloc/trait.Allocator.html
 
-#### Minimum Supported Rust Version (MSRV)
+### Using the `Allocator` API on Stable Rust
+
+You can enable the `allocator_api2` Cargo feature and `bumpalo` will use [the
+`allocator_api2` crate](https://crates.io/crates/allocator-api2) to implement
+the unstable nightly`Allocator` API on stable Rust. This means that
+`bumpalo::Bump` will be usable with any collection that is generic over
+`allocator_api2::Allocator`.
+
+### Minimum Supported Rust Version (MSRV)
 
 This crate is guaranteed to compile on stable Rust **1.63** and up. It might
 compile with older versions but that may change in any new patch release.