diff --git a/.github/workflows/release-please.yml b/.github/workflows/release-please.yml
new file mode 100644
index 0000000..6e0150c
--- /dev/null
+++ b/.github/workflows/release-please.yml
@@ -0,0 +1,20 @@
+name: Release Please
+
+on:
+  push:
+    branches:
+      - main
+  workflow_dispatch:
+
+permissions:
+  contents: write
+  pull-requests: write
+
+jobs:
+  release-please:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: googleapis/release-please-action@v4
+        with:
+          config-file: release-please-config.json
+          manifest-file: .release-please-manifest.json
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 462d58f..421bb2e 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -1,4 +1,4 @@
-name: Release
+name: Publish to npm
 
 on:
   push:
@@ -26,9 +26,20 @@ jobs:
           node-version: 20.11.1
           registry-url: 'https://registry.npmjs.org/'
 
-      - run: pnpm install
+      - run: pnpm install --frozen-lockfile
+
+      - name: Validate tag and package version
+        run: |
+          TAG_VERSION="${GITHUB_REF_NAME#v}"
+          PKG_VERSION="$(node -p "require('./packages/react/package.json').version")"
+
+          if [ "$TAG_VERSION" != "$PKG_VERSION" ]; then
+            echo "Tag version ($TAG_VERSION) does not match package version ($PKG_VERSION)."
+            exit 1
+          fi
+
       - run: pnpm build
       - run: pnpm test
       - run: pnpm --filter react-virtualized-diff publish --access public --no-git-checks
         env:
-            NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}
+          NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}
diff --git a/.release-please-manifest.json b/.release-please-manifest.json
new file mode 100644
index 0000000..449663d
--- /dev/null
+++ b/.release-please-manifest.json
@@ -0,0 +1,3 @@
+{
+  "packages/react": "0.1.2"
+}
diff --git a/CHANGELOG.md b/CHANGELOG.md
index b392bec..a7880e4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,18 @@ All notable changes to this project will be documented in this file.
 
 The format is based on Keep a Changelog, and this project follows Semantic Versioning.
 
+## [0.1.2] - 2026-04-06
+
+### Added
+
+- Added `release-please` workflow to automatically create version/changelog release PRs from conventional commits
+- Added release manifest/config to keep package versioning source-of-truth in repository metadata
+
+### Changed
+
+- Updated publish workflow to validate git tag version against `packages/react/package.json` before npm publish
+- Release flow now supports automated patch/minor bumps without manually editing workflow version values
+
 ## [0.1.1] - 2026-04-06
 
 ### Added
diff --git a/README.md b/README.md
index 2373359..bb0177f 100644
--- a/README.md
+++ b/README.md
@@ -117,6 +117,21 @@ See [CHANGELOG.md](./CHANGELOG.md) for tracked releases and supported capabiliti
 
 ---
 
+## Automated versioning & release
+
+This repository now uses **Release Please** to automate versioning and changelog generation.
+
+- Merge commits to `main` using Conventional Commits (`fix:`, `feat:`, `feat!:` etc.)
+- Release Please opens/updates a release PR automatically
+- Merging that PR creates a `vX.Y.Z` tag and GitHub Release
+- npm publish workflow is triggered by that tag and publishes `react-virtualized-diff` automatically
+
+Version bump rules (SemVer):
+
+- `fix:`/`chore:` and similar => patch (`v0.1.x` -> `v0.1.x+1`)
+- `feat:` => minor (`v0.1.x` -> `v0.2.0`)
+- `feat!:` or `BREAKING CHANGE:` => major (`v0.x.x` -> `v1.0.0`)
+
 ## Future plan
 
 ### Near-term roadmap
@@ -133,7 +148,7 @@ See [CHANGELOG.md](./CHANGELOG.md) for tracked releases and supported capabiliti
 - [ ] Dark/light theme presets and design tokens
 - [ ] SSR usage guide (Next.js / Remix examples)
 - [ ] More real-world examples (JSON, logs, markdown, code)
-- [ ] CI release automation + semantic versioning workflow
+- [x] CI release automation + semantic versioning workflow
 - [ ] Contribution guide and issue templates
 - [ ] International docs beyond English/Chinese
 
diff --git a/packages/react/package.json b/packages/react/package.json
index ca5ccce..ff6fbf4 100644
--- a/packages/react/package.json
+++ b/packages/react/package.json
@@ -1,6 +1,6 @@
 {
   "name": "react-virtualized-diff",
-  "version": "0.1.1",
+  "version": "0.1.2",
   "description": "High-performance React diff viewer for large files",
   "main": "./dist/index.cjs",
   "module": "./dist/index.mjs",
diff --git a/release-please-config.json b/release-please-config.json
new file mode 100644
index 0000000..3bbe390
--- /dev/null
+++ b/release-please-config.json
@@ -0,0 +1,11 @@
+{
+  "$schema": "https://raw.githubusercontent.com/googleapis/release-please/main/schemas/config.json",
+  "include-component-in-tag": false,
+  "packages": {
+    "packages/react": {
+      "release-type": "node",
+      "package-name": "react-virtualized-diff",
+      "changelog-path": "CHANGELOG.md"
+    }
+  }
+}