diff --git a/CHANGELOG.md b/CHANGELOG.md
index 60c9f7602..61f32e5fc 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,26 @@
 
 <!-- <START NEW CHANGELOG ENTRY> -->
 
+## 2.9.1
+
+([Full Changelog](https://github.com/jupyterlab/jupyter-ai/compare/@jupyter-ai/core@2.9.0...effc60920bca2a0d1d37beaff03d2bf18bb7d392))
+
+### Enhancements made
+
+- LangChain v0.1.0 [#572](https://github.com/jupyterlab/jupyter-ai/pull/572) ([@dlqqq](https://github.com/dlqqq))
+
+### Bugs fixed
+
+- Update Cohere model IDs [#584](https://github.com/jupyterlab/jupyter-ai/pull/584) ([@dlqqq](https://github.com/dlqqq))
+
+### Contributors to this release
+
+([GitHub contributors page for this release](https://github.com/jupyterlab/jupyter-ai/graphs/contributors?from=2024-01-08&to=2024-01-18&type=c))
+
+[@dlqqq](https://github.com/search?q=repo%3Ajupyterlab%2Fjupyter-ai+involves%3Adlqqq+updated%3A2024-01-08..2024-01-18&type=Issues) | [@JasonWeill](https://github.com/search?q=repo%3Ajupyterlab%2Fjupyter-ai+involves%3AJasonWeill+updated%3A2024-01-08..2024-01-18&type=Issues) | [@jtpio](https://github.com/search?q=repo%3Ajupyterlab%2Fjupyter-ai+involves%3Ajtpio+updated%3A2024-01-08..2024-01-18&type=Issues) | [@welcome](https://github.com/search?q=repo%3Ajupyterlab%2Fjupyter-ai+involves%3Awelcome+updated%3A2024-01-08..2024-01-18&type=Issues)
+
+<!-- <END NEW CHANGELOG ENTRY> -->
+
 ## 2.9.0
 
 ([Full Changelog](https://github.com/jupyterlab/jupyter-ai/compare/@jupyter-ai/core@2.8.1...a1c9da8ad37daada3033228a109118df4c6a07cf))
@@ -17,8 +37,6 @@
 
 [@dlqqq](https://github.com/search?q=repo%3Ajupyterlab%2Fjupyter-ai+involves%3Adlqqq+updated%3A2024-01-03..2024-01-08&type=Issues) | [@JasonWeill](https://github.com/search?q=repo%3Ajupyterlab%2Fjupyter-ai+involves%3AJasonWeill+updated%3A2024-01-03..2024-01-08&type=Issues) | [@krassowski](https://github.com/search?q=repo%3Ajupyterlab%2Fjupyter-ai+involves%3Akrassowski+updated%3A2024-01-03..2024-01-08&type=Issues) | [@lumberbot-app](https://github.com/search?q=repo%3Ajupyterlab%2Fjupyter-ai+involves%3Alumberbot-app+updated%3A2024-01-03..2024-01-08&type=Issues)
 
-<!-- <END NEW CHANGELOG ENTRY> -->
-
 ## 2.8.1
 
 ([Full Changelog](https://github.com/jupyterlab/jupyter-ai/compare/@jupyter-ai/core@2.8.0...5cd4dbb8075a7dabf9df5e62df8b4d6a6c099918))
diff --git a/lerna.json b/lerna.json
index 5de42974f..54f6dc94b 100644
--- a/lerna.json
+++ b/lerna.json
@@ -1,7 +1,7 @@
 {
   "$schema": "node_modules/lerna/schemas/lerna-schema.json",
   "useWorkspaces": true,
-  "version": "2.9.0",
+  "version": "2.9.1",
   "npmClient": "yarn",
   "useNx": true
 }
diff --git a/package.json b/package.json
index d173391be..3ad09f33d 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@jupyter-ai/monorepo",
-  "version": "2.9.0",
+  "version": "2.9.1",
   "description": "A generative AI extension for JupyterLab",
   "private": true,
   "keywords": [
diff --git a/packages/jupyter-ai-magics/package.json b/packages/jupyter-ai-magics/package.json
index 3d6f3da9f..37f828a8e 100644
--- a/packages/jupyter-ai-magics/package.json
+++ b/packages/jupyter-ai-magics/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@jupyter-ai/magics",
-  "version": "2.9.0",
+  "version": "2.9.1",
   "description": "Jupyter AI magics Python package. Not published on NPM.",
   "private": true,
   "homepage": "https://github.com/jupyterlab/jupyter-ai",
diff --git a/packages/jupyter-ai/package.json b/packages/jupyter-ai/package.json
index 0dda0870f..504b7281a 100644
--- a/packages/jupyter-ai/package.json
+++ b/packages/jupyter-ai/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@jupyter-ai/core",
-  "version": "2.9.0",
+  "version": "2.9.1",
   "description": "A generative AI extension for JupyterLab",
   "keywords": [
     "jupyter",