diff --git a/CHANGELOG.md b/CHANGELOG.md
index a3074ca0943a..ab7f8df39e2a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,72 @@
 All notable changes to this project will be documented in this file.
 See [Conventional Commits](https://conventionalcommits.org) for commit guidelines.
 
+## 6.9.1
+
+_Jun 30, 2023_
+
+We'd like to offer a big thanks to the 13 contributors who made this release possible. Here are some highlights ✨:
+
+- 🔎 Add experimental API for faster filtering performance
+- 🌍 Add Chinese (Hong Kong) (zh-HK) locale on the pickers
+- 🌍 Improve Romanian (ro-RO) and Hungarian (hu-HU) translations on the pickers and the data grid
+- 🐞 Bugfixes
+- 📚 Documentation improvements
+
+### `@mui/x-data-grid@v6.9.1` / `@mui/x-data-grid-pro@v6.9.1` / `@mui/x-data-grid-premium@v6.9.1`
+
+#### Changes
+
+- [DataGrid] Add Joy UI `tooltip` and `loadingOverlay` slots (#9028) @cherniavskii
+- [DataGrid] Add section about enabling pagination on Pro and Premium (#8759) @joserodolfofreitas
+- [DataGrid] Don't forward `editCellState` prop to DOM element (#9501) @m4theushw
+- [DataGrid] Add experimental API for faster filtering performance (#9254) @romgrk
+- [DataGrid] Fix `nextFieldToFocus` to always be a visible column field when <kbd>Tab</kbd> key is pressed (#8314) @yaredtsy
+- [DataGrid] Fix `Maximum call stack size exceeded` error when using fractional width (#9516) @cherniavskii
+- [DataGridPro] Don't throw error in column pinning (#9507) @romgrk
+- [DataGridPro] Fix bug with `checkboxSelection` and treeData/grouping (#9418) @romgrk
+- [l10n] Improve Romanian (ro-RO) and Hungarian (hu-HU) translations (#9436) @noraleonte
+
+### `@mui/x-date-pickers@v6.9.1` / `@mui/x-date-pickers-pro@v6.9.1`
+
+#### Changes
+
+- [DateTimePicker] Scroll to Digital Clock section only when selection changes (#9434) @LukasTy
+- [pickers] Handle `keyDown` only when input is focused (#9481) @LukasTy
+- [pickers] Add `referenceDate` prop on `TimeClock`, `DigitalClock` and `MultiSectionDigitalClock` (#9356) @flaviendelangle
+- [l10n] Add Chinese (Hong Kong) (zh-HK) locale (#9468) @samchiu90
+- [l10n] Improve Romanian (ro-RO) translations (#9436) @noraleonte
+
+### `@mui/x-charts@6.0.0-alpha.1`
+
+#### Changes
+
+- [charts] Take responsive container from data grid (#9497) @alexfauquette
+- [charts] Update README.md (#9426) @alexfauquette
+- [charts] Fix typo and small refactor (#9526) @flaviendelangle
+
+### Docs
+
+- [docs] Add a recipe limiting to one expanded detail panel at a time (#9488) @cherniavskii
+- [docs] Add missing upcoming flag without issue (#9449) @oliviertassinari
+- [docs] Fix 301 when opening the charts @oliviertassinari
+- [docs] Fix 404 link (#9435) @alexfauquette
+- [docs] Fix `productId` logic (#9451) @oliviertassinari
+- [docs] Update charts overview.md (#9429) @brentertz
+- [docs] Avoid systematic usage of `"bg": "inline"` (#9499) @alexfauquette
+- [docs] Display plan icon in ToC (#9490) @cherniavskii
+- [docs] Remove "product" markdown header (#9517) @oliviertassinari
+
+### Core
+
+- [core] Add `edit-mode` to priority support action (#9483) @DanailH
+- [core] Fix priority support prompt action (#9472) @DanailH
+- [core] Update `uses` for priority support action (#9480) @DanailH
+- [core] Bumb update monorepo (#9476) @alexfauquette
+- [CHANGELOG] Fix media quality (#9439) @oliviertassinari
+- [CHANGELOG] Remove height img attribute @oliviertassinari
+- [test] Skip flaky row pinning tests in JSDOM (#9511) @cherniavskii
+
 ## 6.9.0
 
 _Jun 22, 2023_
diff --git a/package.json b/package.json
index 543382c6acb5..892d029c852c 100644
--- a/package.json
+++ b/package.json
@@ -1,5 +1,5 @@
 {
-  "version": "6.9.0",
+  "version": "6.9.1",
   "private": true,
   "scripts": {
     "start": "yarn && yarn docs:dev",
diff --git a/packages/grid/x-data-grid-generator/package.json b/packages/grid/x-data-grid-generator/package.json
index 0a9f7e8e5c6b..1a748a315543 100644
--- a/packages/grid/x-data-grid-generator/package.json
+++ b/packages/grid/x-data-grid-generator/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@mui/x-data-grid-generator",
-  "version": "6.9.0",
+  "version": "6.9.1",
   "description": "Generate fake data for demo purposes only.",
   "author": "MUI Team",
   "main": "src/index.ts",
@@ -32,7 +32,7 @@
   "dependencies": {
     "@babel/runtime": "^7.22.5",
     "@mui/base": "^5.0.0-beta.5",
-    "@mui/x-data-grid-premium": "6.9.0",
+    "@mui/x-data-grid-premium": "6.9.1",
     "chance": "^1.1.11",
     "clsx": "^1.2.1",
     "lru-cache": "^7.18.3"
diff --git a/packages/grid/x-data-grid-premium/package.json b/packages/grid/x-data-grid-premium/package.json
index 0d60b90d96f8..a7c4366d6806 100644
--- a/packages/grid/x-data-grid-premium/package.json
+++ b/packages/grid/x-data-grid-premium/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@mui/x-data-grid-premium",
-  "version": "6.9.0",
+  "version": "6.9.1",
   "description": "The Premium plan edition of the data grid component (MUI X).",
   "author": "MUI Team",
   "main": "src/index.ts",
@@ -44,8 +44,8 @@
   "dependencies": {
     "@babel/runtime": "^7.22.5",
     "@mui/utils": "^5.13.6",
-    "@mui/x-data-grid": "6.9.0",
-    "@mui/x-data-grid-pro": "6.9.0",
+    "@mui/x-data-grid": "6.9.1",
+    "@mui/x-data-grid-pro": "6.9.1",
     "@mui/x-license-pro": "6.9.0",
     "@types/format-util": "^1.0.2",
     "clsx": "^1.2.1",
diff --git a/packages/grid/x-data-grid-pro/package.json b/packages/grid/x-data-grid-pro/package.json
index 39dba15618b7..f09d9e345b5c 100644
--- a/packages/grid/x-data-grid-pro/package.json
+++ b/packages/grid/x-data-grid-pro/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@mui/x-data-grid-pro",
-  "version": "6.9.0",
+  "version": "6.9.1",
   "description": "The Pro plan edition of the data grid component (MUI X).",
   "author": "MUI Team",
   "main": "src/index.ts",
@@ -44,7 +44,7 @@
   "dependencies": {
     "@babel/runtime": "^7.22.5",
     "@mui/utils": "^5.13.6",
-    "@mui/x-data-grid": "6.9.0",
+    "@mui/x-data-grid": "6.9.1",
     "@mui/x-license-pro": "6.9.0",
     "@types/format-util": "^1.0.2",
     "clsx": "^1.2.1",
diff --git a/packages/grid/x-data-grid/package.json b/packages/grid/x-data-grid/package.json
index a2babe06a05d..0d5127e065d3 100644
--- a/packages/grid/x-data-grid/package.json
+++ b/packages/grid/x-data-grid/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@mui/x-data-grid",
-  "version": "6.9.0",
+  "version": "6.9.1",
   "description": "The community edition of the data grid component (MUI X).",
   "author": "MUI Team",
   "main": "src/index.ts",
diff --git a/packages/x-charts/package.json b/packages/x-charts/package.json
index a1f2bd2de639..20a793dac91d 100644
--- a/packages/x-charts/package.json
+++ b/packages/x-charts/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@mui/x-charts",
-  "version": "6.0.0-alpha.0",
+  "version": "6.0.0-alpha.1",
   "description": "The community edition of the charts components (MUI X).",
   "author": "MUI Team",
   "main": "./src/index.js",
diff --git a/packages/x-date-pickers-pro/package.json b/packages/x-date-pickers-pro/package.json
index 5db31dff1d2a..dd9ede5f6129 100644
--- a/packages/x-date-pickers-pro/package.json
+++ b/packages/x-date-pickers-pro/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@mui/x-date-pickers-pro",
-  "version": "6.9.0",
+  "version": "6.9.1",
   "description": "The commercial edition of the date picker components (MUI X).",
   "author": "MUI Team",
   "main": "./src/index.js",
@@ -43,7 +43,7 @@
   "dependencies": {
     "@babel/runtime": "^7.22.5",
     "@mui/utils": "^5.13.6",
-    "@mui/x-date-pickers": "6.9.0",
+    "@mui/x-date-pickers": "6.9.1",
     "@mui/x-license-pro": "6.9.0",
     "clsx": "^1.2.1",
     "prop-types": "^15.8.1",
diff --git a/packages/x-date-pickers/package.json b/packages/x-date-pickers/package.json
index 580a4d556468..069a46c9c2dc 100644
--- a/packages/x-date-pickers/package.json
+++ b/packages/x-date-pickers/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@mui/x-date-pickers",
-  "version": "6.9.0",
+  "version": "6.9.1",
   "description": "The community edition of the date picker components (MUI X).",
   "author": "MUI Team",
   "main": "./src/index.js",