diff --git a/Cargo.lock b/Cargo.lock
index 645f7560e5c..0663112c199 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -205,7 +205,7 @@ version = "4.1.13"
 dependencies = [
  "backtrace",
  "bitflags",
- "clap_lex 0.3.3",
+ "clap_lex 0.4.0",
  "humantime",
  "is-terminal",
  "once_cell",
@@ -228,7 +228,7 @@ name = "clap_complete"
 version = "4.1.5"
 dependencies = [
  "clap 4.1.13",
- "clap_lex 0.3.3",
+ "clap_lex 0.4.0",
  "is_executable",
  "pathdiff",
  "shlex",
@@ -267,7 +267,7 @@ dependencies = [
 
 [[package]]
 name = "clap_lex"
-version = "0.3.3"
+version = "0.4.0"
 
 [[package]]
 name = "clap_mangen"
diff --git a/clap_builder/Cargo.toml b/clap_builder/Cargo.toml
index df7ae60ec97..9f269cb556e 100644
--- a/clap_builder/Cargo.toml
+++ b/clap_builder/Cargo.toml
@@ -66,7 +66,7 @@ unstable-v5 = ["deprecated"]
 bench = false
 
 [dependencies]
-clap_lex = { path = "../clap_lex", version = "0.3.0" }
+clap_lex = { path = "../clap_lex", version = "0.4.0" }
 bitflags = "1.2.0"
 unicase = { version = "2.6.0", optional = true }
 strsim = { version = "0.10.0",  optional = true }
diff --git a/clap_complete/Cargo.toml b/clap_complete/Cargo.toml
index d60e4984c09..4fd0e861e3f 100644
--- a/clap_complete/Cargo.toml
+++ b/clap_complete/Cargo.toml
@@ -33,7 +33,7 @@ bench = false
 
 [dependencies]
 clap = { path = "../", version = "4.1.0", default-features = false, features = ["std"] }
-clap_lex = { path = "../clap_lex", version = "0.3.0", optional = true }
+clap_lex = { path = "../clap_lex", version = "0.4.0", optional = true }
 is_executable = { version = "1.0.1", optional = true }
 pathdiff = { version = "0.2.1", optional = true }
 shlex = { version = "1.1.0", optional = true }
diff --git a/clap_lex/CHANGELOG.md b/clap_lex/CHANGELOG.md
index 34f3e5e67a5..e61bdf77efb 100644
--- a/clap_lex/CHANGELOG.md
+++ b/clap_lex/CHANGELOG.md
@@ -7,6 +7,8 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 <!-- next-header -->
 ## [Unreleased] - ReleaseDate
 
+## [0.4.0] - 2023-03-25
+
 ### Breaking Change
 
 - `RawOsStr` and `RawOsString` are no long exported
@@ -63,7 +65,8 @@ MSRV changed to 1.64.0
 - Drop `memchr` dependency
 
 <!-- next-url -->
-[Unreleased]: https://github.com/clap-rs/clap/compare/clap_lex-v0.3.3...HEAD
+[Unreleased]: https://github.com/clap-rs/clap/compare/clap_lex-v0.4.0...HEAD
+[0.4.0]: https://github.com/clap-rs/clap/compare/clap_lex-v0.3.3...clap_lex-v0.4.0
 [0.3.3]: https://github.com/clap-rs/clap/compare/clap_lex-v0.3.2...clap_lex-v0.3.3
 [0.3.2]: https://github.com/clap-rs/clap/compare/clap_lex-v0.3.1...clap_lex-v0.3.2
 [0.3.1]: https://github.com/clap-rs/clap/compare/clap_lex-v0.3.0...clap_lex-v0.3.1
diff --git a/clap_lex/Cargo.toml b/clap_lex/Cargo.toml
index 3729e459b1b..a06ecb6e6d3 100644
--- a/clap_lex/Cargo.toml
+++ b/clap_lex/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "clap_lex"
-version = "0.3.3"
+version = "0.4.0"
 description = "Minimal, flexible command line parser"
 repository = "https://github.com/clap-rs/clap/tree/master/clap_lex"
 categories = ["command-line-interface"]
diff --git a/clap_lex/README.md b/clap_lex/README.md
index 93434053fb5..b7e4658034a 100644
--- a/clap_lex/README.md
+++ b/clap_lex/README.md
@@ -5,15 +5,15 @@
 
 [![Crates.io](https://img.shields.io/crates/v/clap_lex?style=flat-square)](https://crates.io/crates/clap_lex)
 [![Crates.io](https://img.shields.io/crates/d/clap_lex?style=flat-square)](https://crates.io/crates/clap_lex)
-[![License](https://img.shields.io/badge/license-Apache%202.0-blue?style=flat-square)](https://github.com/clap-rs/clap/blob/clap_lex-v0.3.3/LICENSE-APACHE)
-[![License](https://img.shields.io/badge/license-MIT-blue?style=flat-square)](https://github.com/clap-rs/clap/blob/clap_lex-v0.3.3/LICENSE-MIT)
+[![License](https://img.shields.io/badge/license-Apache%202.0-blue?style=flat-square)](https://github.com/clap-rs/clap/blob/clap_lex-v0.4.0/LICENSE-APACHE)
+[![License](https://img.shields.io/badge/license-MIT-blue?style=flat-square)](https://github.com/clap-rs/clap/blob/clap_lex-v0.4.0/LICENSE-MIT)
 
 Dual-licensed under [Apache 2.0](LICENSE-APACHE) or [MIT](LICENSE-MIT).
 
 1. [About](#about)
 2. [API Reference](https://docs.rs/clap_lex)
 3. [Questions & Discussions](https://github.com/clap-rs/clap/discussions)
-4. [CONTRIBUTING](https://github.com/clap-rs/clap/blob/clap_lex-v0.3.3/clap_lex/CONTRIBUTING.md)
-5. [Sponsors](https://github.com/clap-rs/clap/blob/clap_lex-v0.3.3/README.md#sponsors)
+4. [CONTRIBUTING](https://github.com/clap-rs/clap/blob/clap_lex-v0.4.0/clap_lex/CONTRIBUTING.md)
+5. [Sponsors](https://github.com/clap-rs/clap/blob/clap_lex-v0.4.0/README.md#sponsors)
 
 ## About