diff --git a/Cargo.lock b/Cargo.lock
index 2e76a4a..3f1854e 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -4,4 +4,4 @@ version = 4
 
 [[package]]
 name = "shell-js"
-version = "0.3.0"
+version = "0.4.0"
diff --git a/Cargo.toml b/Cargo.toml
index e7808a2..af0cc18 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "shell-js"
-version = "0.3.0"
+version = "0.4.0"
 edition = "2024"
 license = "MIT"
 description = "Optional WebAssembly accelerator for shell.js"
diff --git a/docs/CHANGELOG.md b/docs/CHANGELOG.md
index 3c88d7e..df38df8 100644
--- a/docs/CHANGELOG.md
+++ b/docs/CHANGELOG.md
@@ -7,6 +7,20 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [0.4.0](https://github.com/keys-i/shell.js/compare/v0.3.0...v0.4.0) - 2026-08-15
+
+### Added
+
+- consume standalone Krad Wasm
+
+### Fixed
+
+- harden runtime conformance
+
+### Other
+
+- Merge main into runtime
+
 ### Added
 
 - add a verified standalone Krad WebAssembly command