diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8584c3c..57d4b91 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,12 +4,22 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## Pending
+## [0.12.0] - 2024-07-03
+
+### Additions
 
 * Added `Serializable::write_exact` so serialization requires less stack space
-* Removed all impls of `serde::{Serialize, Deserailize}` from crate
 * Added support for the P-521 curve
 
+### Changes
+
+* Constrained `Aead::AeadImpl` to be `Send + Sync`
+* Bumped `subtle` dependency and removed `byteorder` dependency
+
+### Removals
+
+* Removed all impls of `serde::{Serialize, Deserailize}` from crate. See [wiki](https://github.com/rozbb/rust-hpke/wiki/Migrating-away-from-the-serde_impls-feature) for migration instructions.
+
 ## [0.11.0] - 2023-10-11
 
 ### Removals
diff --git a/Cargo.toml b/Cargo.toml
index b38ab72..ae65c16 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -4,7 +4,7 @@ repository = "https://github.com/rozbb/rust-hpke"
 documentation = "https://docs.rs/rust-hpke"
 description = "An implementation of the HPKE hybrid encryption standard (RFC 9180) in pure Rust"
 readme = "README.md"
-version = "0.11.0"
+version = "0.12.0"
 authors = ["Michael Rosenberg <michael@mrosenberg.pub>"]
 edition = "2021"
 license = "MIT/Apache-2.0"
@@ -38,7 +38,7 @@ p256 = { version = "0.13", default-features = false, features = ["arithmetic", "
 p384 = { version = "0.13", default-features = false, features = ["arithmetic", "ecdh"], optional = true}
 p521 = { version = "0.13", default-features = false, features = ["arithmetic", "ecdh"], optional = true}
 sha2 = { version = "0.10", default-features = false }
-subtle = { version = "2.5", default-features = false }
+subtle = { version = "2.6", default-features = false }
 x25519-dalek = { version = "2", default-features = false, features = ["static_secrets"], optional = true }
 zeroize = { version = "1", default-features = false, features = ["zeroize_derive"] }
 
diff --git a/README.md b/README.md
index 2051647..196e588 100644
--- a/README.md
+++ b/README.md
@@ -66,7 +66,7 @@ Breaking changes
 
 ### Breaking changes in v0.12
 
-The `serde_impls` feature was removed. If you were using this and require backwards compatible serialization/deserialization, see the wiki page [here](https://github.com/rozbb/rust-hpke/wiki/Migrating-away-from-the-%60serde_impls%60-feature).
+The `serde_impls` feature was removed. If you were using this and require backwards compatible serialization/deserialization, see the wiki page [here](https://github.com/rozbb/rust-hpke/wiki/Migrating-away-from-the-serde_impls-feature).
 
 MSRV
 ----