diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2d352af..eb2b03f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,4 +2,33 @@
 
 <!-- <START NEW CHANGELOG ENTRY> -->
 
+## 4.0.0
+
+([Full Changelog](https://github.com/jupyterlab-contrib/jupyterlab-kernelspy/compare/v3.1.0...00f347a9bb3a7dcdc6d36f14e36bd04f0cae3640))
+
+### Enhancements made
+
+- Update to JupyterLab 4 [#90](https://github.com/jupyterlab-contrib/jupyterlab-kernelspy/pull/90) ([@jtpio](https://github.com/jtpio))
+
+### Other merged PRs
+
+- Bump word-wrap from 1.2.3 to 1.2.4 [#89](https://github.com/jupyterlab-contrib/jupyterlab-kernelspy/pull/89) ([@dependabot](https://github.com/dependabot))
+- Bump semver from 5.7.1 to 5.7.2 [#88](https://github.com/jupyterlab-contrib/jupyterlab-kernelspy/pull/88) ([@dependabot](https://github.com/dependabot))
+- Bump webpack from 5.37.1 to 5.76.1 [#87](https://github.com/jupyterlab-contrib/jupyterlab-kernelspy/pull/87) ([@dependabot](https://github.com/dependabot))
+- Bump http-cache-semantics from 4.1.0 to 4.1.1 [#86](https://github.com/jupyterlab-contrib/jupyterlab-kernelspy/pull/86) ([@dependabot](https://github.com/dependabot))
+- Bump json5 from 1.0.1 to 1.0.2 [#85](https://github.com/jupyterlab-contrib/jupyterlab-kernelspy/pull/85) ([@dependabot](https://github.com/dependabot))
+- Bump minimatch from 3.0.4 to 3.1.2 [#84](https://github.com/jupyterlab-contrib/jupyterlab-kernelspy/pull/84) ([@dependabot](https://github.com/dependabot))
+- Bump loader-utils from 1.4.1 to 1.4.2 [#83](https://github.com/jupyterlab-contrib/jupyterlab-kernelspy/pull/83) ([@dependabot](https://github.com/dependabot))
+- Bump loader-utils from 1.4.0 to 1.4.1 [#82](https://github.com/jupyterlab-contrib/jupyterlab-kernelspy/pull/82) ([@dependabot](https://github.com/dependabot))
+- Bump moment from 2.29.2 to 2.29.4 [#81](https://github.com/jupyterlab-contrib/jupyterlab-kernelspy/pull/81) ([@dependabot](https://github.com/dependabot))
+- Bump terser from 5.7.0 to 5.14.2 [#80](https://github.com/jupyterlab-contrib/jupyterlab-kernelspy/pull/80) ([@dependabot](https://github.com/dependabot))
+- Bump shell-quote from 1.7.2 to 1.7.3 [#79](https://github.com/jupyterlab-contrib/jupyterlab-kernelspy/pull/79) ([@dependabot](https://github.com/dependabot))
+- Enhance setup [#78](https://github.com/jupyterlab-contrib/jupyterlab-kernelspy/pull/78) ([@fcollonval](https://github.com/fcollonval))
+
+### Contributors to this release
+
+([GitHub contributors page for this release](https://github.com/jupyterlab-contrib/jupyterlab-kernelspy/graphs/contributors?from=2022-04-19&to=2023-08-30&type=c))
+
+[@dependabot](https://github.com/search?q=repo%3Ajupyterlab-contrib%2Fjupyterlab-kernelspy+involves%3Adependabot+updated%3A2022-04-19..2023-08-30&type=Issues) | [@fcollonval](https://github.com/search?q=repo%3Ajupyterlab-contrib%2Fjupyterlab-kernelspy+involves%3Afcollonval+updated%3A2022-04-19..2023-08-30&type=Issues) | [@github-actions](https://github.com/search?q=repo%3Ajupyterlab-contrib%2Fjupyterlab-kernelspy+involves%3Agithub-actions+updated%3A2022-04-19..2023-08-30&type=Issues) | [@jtpio](https://github.com/search?q=repo%3Ajupyterlab-contrib%2Fjupyterlab-kernelspy+involves%3Ajtpio+updated%3A2022-04-19..2023-08-30&type=Issues)
+
 <!-- <END NEW CHANGELOG ENTRY> -->
diff --git a/jupyterlab_kernelspy/_version.py b/jupyterlab_kernelspy/_version.py
index 886e094..5a19008 100644
--- a/jupyterlab_kernelspy/_version.py
+++ b/jupyterlab_kernelspy/_version.py
@@ -1,4 +1,4 @@
 # This file is auto-generated by Hatchling. As such, do not:
 #   - modify
 #   - track in version control e.g. be sure to add to .gitignore
-__version__ = VERSION = '3.1.0'
+__version__ = VERSION = '4.0.0'
diff --git a/package.json b/package.json
index 72856ce..7255694 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
     "name": "jupyterlab-kernelspy",
-    "version": "3.1.0",
+    "version": "4.0.0",
     "description": "A Jupyter Lab extension for inspecting messages to/from a kernel",
     "keywords": [
         "jupyter",