diff --git a/bytestring/CHANGES.md b/bytestring/CHANGES.md
index 3ffcac15..a5d69fd5 100644
--- a/bytestring/CHANGES.md
+++ b/bytestring/CHANGES.md
@@ -2,6 +2,8 @@
 
 ## Unreleased
 
+## 1.4.0
+
 - Add `ByteString::split_at()` method.
 - Minimum supported Rust version (MSRV) is now 1.71.
 
diff --git a/bytestring/Cargo.toml b/bytestring/Cargo.toml
index 2b0d719a..067a7fbe 100644
--- a/bytestring/Cargo.toml
+++ b/bytestring/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "bytestring"
-version = "1.3.1"
+version = "1.4.0"
 description = "A UTF-8 encoded read-only string using `Bytes` as storage"
 authors = [
     "Nikolay Kim <fafhrd91@gmail.com>",
diff --git a/bytestring/README.md b/bytestring/README.md
index 2bfd3083..a525cd75 100644
--- a/bytestring/README.md
+++ b/bytestring/README.md
@@ -5,11 +5,11 @@
 <!-- prettier-ignore-start -->
 
 [![crates.io](https://img.shields.io/crates/v/bytestring?label=latest)](https://crates.io/crates/bytestring)
-[![Documentation](https://docs.rs/bytestring/badge.svg?version=1.3.1)](https://docs.rs/bytestring/1.3.1)
+[![Documentation](https://docs.rs/bytestring/badge.svg?version=1.4.0)](https://docs.rs/bytestring/1.4.0)
 [![Version](https://img.shields.io/badge/rustc-1.52+-ab6000.svg)](https://blog.rust-lang.org/2021/05/06/Rust-1.52.0.html)
 ![MIT or Apache 2.0 licensed](https://img.shields.io/crates/l/bytestring.svg)
 <br />
-[![Dependency Status](https://deps.rs/crate/bytestring/1.3.1/status.svg)](https://deps.rs/crate/bytestring/1.3.1)
+[![Dependency Status](https://deps.rs/crate/bytestring/1.4.0/status.svg)](https://deps.rs/crate/bytestring/1.4.0)
 ![Download](https://img.shields.io/crates/d/bytestring.svg)
 [![Chat on Discord](https://img.shields.io/discord/771444961383153695?label=chat&logo=discord)](https://discord.gg/NWpN5mmg3x)