diff --git a/Cargo.lock b/Cargo.lock
index 2c944364..e395bc6c 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -81,7 +81,7 @@ checksum = "dea908e7347a8c64e378c17e30ef880ad73e3b4498346b055c2c00ea342f3179"
 
 [[package]]
 name = "bip32"
-version = "0.4.0-pre"
+version = "0.4.0"
 dependencies = [
  "bs58",
  "hex-literal",
diff --git a/bip32/CHANGELOG.md b/bip32/CHANGELOG.md
index 5253af25..0ba2578f 100644
--- a/bip32/CHANGELOG.md
+++ b/bip32/CHANGELOG.md
@@ -4,6 +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).
 
+## 0.4.0 (2022-05-10)
+### Changed
+- Bump `pbkdf2` to 0.11.0 ([#983])
+- Bump `hmac` to v0.12 ([#994])
+- Bump `k256` to v0.11 ([#994])
+- Bump `p256` to v0.11 ([#994])
+- Bump `pbkdf2` to v0.10 ([#994])
+- Bump `sha2` to v0.10 ([#994])
+- Replace `ripemd160` dependency with `ripemd` ([#994])
+- MSRV 1.57 ([#994], [#995])
+- Use const panic for `Prefix::from_parts_unchecked` ([#995])
+
+[#983]: https://github.com/iqlusioninc/crates/pull/983
+[#994]: https://github.com/iqlusioninc/crates/pull/994
+[#995]: https://github.com/iqlusioninc/crates/pull/995
+
 ## 0.3.0 (2022-01-05)
 ### Changed
 - Rust 2021 edition upgrade ([#889])
diff --git a/bip32/Cargo.toml b/bip32/Cargo.toml
index 28d82188..95c719a2 100644
--- a/bip32/Cargo.toml
+++ b/bip32/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "bip32"
-version = "0.4.0-pre"
+version = "0.4.0"
 description = """
 BIP32 hierarchical key derivation implemented in a generic, no_std-friendly
 manner. Supports deriving keys using the pure Rust k256 crate or the