diff --git a/CHANGELOG.md b/CHANGELOG.md
new file mode 100644
index 00000000..29058510
--- /dev/null
+++ b/CHANGELOG.md
@@ -0,0 +1,96 @@
+# Changelog
+
+All notable changes to this project are documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+> Releases prior to `0.91.0` predate this changelog; see the
+> [git tags](https://github.com/vvzvlad/gitmost/tags) for earlier history.
+
+## [Unreleased]
+
+## [0.91.0] - 2026-06-18
+
+Gitmost is a community-focused fork of Docmost. This release drops the
+Enterprise-Edition code paths and introduces the in-app AI agent chat, a RAG
+knowledge layer, an embedded MCP server, and the Gitmost rebrand.
+
+### Breaking Changes
+
+- Remove all frontend Enterprise-Edition code — the project now builds as a pure
+  community edition.
+- AI agent: drop the `updateComment` tool from the agent toolset.
+
+### Added
+
+- **AI agent chat**: per-user in-app AI agent with a floating chat window.
+  Includes live streaming responses, open-page context awareness, a typing
+  indicator, a Stop control, and copy/export of a conversation as Markdown.
+- **AI agent write tools & provenance**: reversible write tools (page
+  create/update/move/soft-delete, comment reply/resolve) enforced by Docmost
+  CASL, plus non-spoofable agent provenance signed into access/collab tokens and
+  recorded on pages and comments. No permanent/force delete.
+- **RAG knowledge retrieval**: workspace bulk reindex with a manual "Reindex
+  now" action, hybrid RRF retrieval with heading-breadcrumb chunks and a merged
+  search tool, dimension-agnostic embeddings, and RAG indexing coverage shown in
+  AI settings.
+- **MCP**: embedded community MCP server served at `/mcp`; an admin UI to
+  list/add/edit/delete external MCP servers with per-server enable toggle, Test,
+  write-only auth headers, a tool allowlist, and a Tavily preset; `insert_image`/
+  `replace_image` can now fetch sources from web URLs.
+- **AI configuration**: dedicated AI provider settings with separate base URL and
+  API key for the chat vs. embedding model, and per-endpoint test buttons.
+- **Branding**: Gitmost logo, favicon, and app name.
+- **Collaboration**: comment resolution for the community build; agent edits are
+  separated from human edits in page history.
+- **Editor / client**: page-tree open/closed state is persisted per
+  workspace+user; the brand logo shows the current `git describe` version.
+
+### Changed
+
+- Move AI settings to a dedicated `/settings/ai` page and redesign it with
+  per-endpoint test buttons.
+- `edit_page_text` now returns verifiable mutation results and refuses
+  formatting-only edits; the agent tolerates Markdown in
+  `edit_page_text`/`insert_node` locators.
+- Compact large tool outputs before persisting them.
+- Reduce the chat window corner radius, shrink the chat message font size, and
+  shrink the default page-tree indentation from 16px to 8px.
+
+### Fixed
+
+- AI chat: stable streaming store id so optimistic and streamed messages render
+  immediately; provider errors stay visible and surface the real provider
+  status/message; the composer draft survives the new-chat id-adoption remount;
+  the workspace AI-chat enable toggle is restored for self-hosted.
+- AI providers: use OpenAI Chat Completions for multi-turn requests; self-heal
+  the stored provider settings JSON; drop the hard output-token cap that
+  truncated complex tool calls.
+- RAG: make the indexer observable and bound hung embedding calls; stop the
+  coverage bar from sticking below 100% on empty pages.
+- Collaboration: use `-` instead of `:` in the agent page-history job id.
+- Accessibility fixes (#2275) and table jitter on the edit/read toggle (#2252).
+
+### Removed
+
+- Non-functional DOCX / PDF / Confluence import buttons.
+
+### Documentation
+
+- README: rebrand to the Gitmost fork with EE-free positioning, an MCP
+  comparison, a grouped roadmap, a Russian translation, a "Migration from
+  Docmost" section, and AI agent chat documentation.
+- Add plans for mobile app, voice dictation, arbitrary HTML/CSS/JS embeds, and
+  offline sync & PWA.
+
+### Internal
+
+- Add `.claude/worktrees/` to `.gitignore`.
+- CI: add a `develop` workflow with `workflow_dispatch`; ignore cache errors in
+  the develop and release builds.
+- Build: drop the private EE submodule, retarget CI to GHCR, and update the
+  Docker image to the GHCR registry.
+
+[Unreleased]: https://github.com/vvzvlad/gitmost/compare/v0.91.0...HEAD
+[0.91.0]: https://github.com/vvzvlad/gitmost/compare/v0.90.1...v0.91.0
diff --git a/apps/client/package.json b/apps/client/package.json
index e346b1dd..00a25bbe 100644
--- a/apps/client/package.json
+++ b/apps/client/package.json
@@ -1,7 +1,7 @@
 {
   "name": "client",
   "private": true,
-  "version": "0.90.1",
+  "version": "0.91.0",
   "scripts": {
     "dev": "vite",
     "build": "tsc && vite build",
diff --git a/apps/server/package.json b/apps/server/package.json
index c0f79ef6..10fa66c1 100644
--- a/apps/server/package.json
+++ b/apps/server/package.json
@@ -1,6 +1,6 @@
 {
   "name": "server",
-  "version": "0.90.1",
+  "version": "0.91.0",
   "description": "",
   "author": "",
   "private": true,
diff --git a/package.json b/package.json
index a1e18baa..1ff3e14e 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "docmost",
   "homepage": "https://docmost.com",
-  "version": "0.90.1",
+  "version": "0.91.0",
   "private": true,
   "scripts": {
     "build": "nx run-many -t build",