mermaid-js · sidharthv96 · Feb 16, 2026 · Nov 21, 2025 · Nov 27, 2025 · Nov 27, 2025
diff --git a/.changeset/shiny-coats-stay.md b/.changeset/shiny-coats-stay.md
@@ -0,0 +1,22 @@
+---
+'@mermaid-js/parser': major
+---
+
+chore: upgrade to Langium v4
+
+Upgrade `@mermaid-js/parser` to use Langium v4,
+see https://github.com/eclipse-langium/langium/releases/tag/v4.0.0
+for more details.
+
+The major breaking changes that impact consumers of this package are:
+
+- Due to various type-related changes, `langium` now requires version `>= 5.8.0`
+  of TypeScript.
+- The generated type names from `ast.ts` have been moved from `<typeName>` to
+  `<typeName>.$type`
+  ([langium#1942](https://github.com/eclipse-langium/langium/pull/1942)).
+
+This also removes a transitive dependency on lodash versions that are vulnerable
+to CVE-2025-13465, although
+[chevrotain doesn't use the affected functions](https://github.com/Chevrotain/chevrotain/blob/21f20cd9754f8d5e85243fd9286d1fff397363ab/packages/website/docs/changes/CHANGELOG.md?plain=1#L5-L8),
+so this is only to silence security scanners.
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
@@ -32,7 +32,9 @@ jobs:
           node-version-file: '.node-version'
 
       - name: Install Packages
-        run: pnpm install --frozen-lockfile
+        run: |
+          pnpm install --frozen-lockfile
+          npm install -g npm@11
 
       - name: Create Release Pull Request or Publish to npm
         id: changesets

diff --git a/README.md b/README.md
@@ -12,10 +12,10 @@ Generate diagrams from markdown-like text.
 <p>
 
 <p align="center">
-<a href="https://mermaid.live/"><b>Live Editor!</b></a>
+<a href="https://mermaid.ai/live/"><b>Live Editor!</b></a>
 </p>
 <p align="center">
- <a href="https://mermaid.js.org">📖 Documentation</a> | <a href="https://mermaid.js.org/intro/">🚀 Getting Started</a> | <a href="https://www.jsdelivr.com/package/npm/mermaid">🌐 CDN</a> | <a href="https://discord.gg/sKeNQX4Wtj" title="Discord invite">🙌 Join Us</a>
+ <a href="https://mermaid.ai/open-source/">📖 Documentation</a> | <a href="https://mermaid.ai/open-source/intro/">🚀 Getting Started</a> | <a href="https://www.jsdelivr.com/package/npm/mermaid">🌐 CDN</a> | <a href="https://discord.gg/sKeNQX4Wtj" title="Discord invite">🙌 Join Us</a>
 </p>
 <p align="center">
 <a href="./README.zh-CN.md">简体中文</a>

diff --git a/docs/ecosystem/integrations-community.md b/docs/ecosystem/integrations-community.md
@@ -12,7 +12,7 @@
 
 Mermaid Chart is built by the team behind Mermaid JS.
 
-For more details, visit the [Mermaid Chart page](./mermaid-chart.md), or visit the [Mermaid Chart website](https://www.mermaidchart.com) .
+For more details, visit the [Mermaid Chart page](./mermaid-chart.md), or visit the [Mermaid Chart website](https://mermaid.ai) .
 
 ## Community integrations
 

diff --git a/docs/ecosystem/mermaid-chart.md b/docs/ecosystem/mermaid-chart.md
@@ -8,15 +8,15 @@
 
 The Future of Diagramming & Visual Collaboration
 
-Try the Ultimate AI, Mermaid, and Visual Diagramming Suite by creating an account at [Mermaid Chart](https://www.mermaidchart.com/app/sign-up).
+Try the Ultimate AI, Mermaid, and Visual Diagramming Suite by creating an account at [Mermaid Chart](https://mermaid.ai/app/sign-up).
 
 <br />
 
 <a href="https://www.producthunt.com/products/mermaid-chart?utm_source=badge-follow&utm_medium=badge&utm_souce=badge-mermaid&#0045;chart" target="_blank"><img src="https://api.producthunt.com/widgets/embed-image/v1/follow.svg?product_id=552855&theme=light" alt="Mermaid&#0032;Chart - A&#0032;smarter&#0032;way&#0032;to&#0032;create&#0032;diagrams | Product Hunt" style="width: 250px; height: 54px;" width="250" height="54" /></a>
 
 ## About
 
-[Mermaid Chart](https://www.mermaidchart.com) was born out of the Mermaid open source project and was founded by Knut Sveidqvist together with Open Core Ventures. The lead developers from Mermaid have joined the company and there is a strong connection between the project we all love and Mermaid Chart. Mermaid Chart brings resources to the open source development of Mermaid and makes it possible to work with Mermaid professionally.
+[Mermaid Chart](https://mermaid.ai) was born out of the Mermaid open source project and was founded by Knut Sveidqvist together with Open Core Ventures. The lead developers from Mermaid have joined the company and there is a strong connection between the project we all love and Mermaid Chart. Mermaid Chart brings resources to the open source development of Mermaid and makes it possible to work with Mermaid professionally.
 
 ## Features
 
@@ -37,7 +37,7 @@ Try the Ultimate AI, Mermaid, and Visual Diagramming Suite by creating an accoun
   - [Google Docs](https://gsuite.google.com/marketplace/app/mermaidchart/947683068472)
   - [Microsoft PowerPoint and Word](https://appsource.microsoft.com/en-us/product/office/WA200006214?tab=Overview)
 
-  Visit our [Plugins](https://www.mermaidchart.com/plugins) page for more information.
+  Visit our [Plugins](https://mermaid.ai/plugins) page for more information.
 
 - **Collaboration** - A web based collaboration feature for multi-user editing on Mermaid diagrams in real-time (Pro and Enterprise plans).
 
@@ -47,16 +47,18 @@ Try the Ultimate AI, Mermaid, and Visual Diagramming Suite by creating an accoun
 
 ## Plans
 
-- **Free** - A free plan that includes six diagrams.
+- **Basic** - A free plan that includes three diagrams and limited AI usage.
 
-- **Pro** - A paid plan that includes unlimited diagrams, access to the collaboration feature, and more.
+- **Plus** - A paid plan that includes unlimited diagrams, scalable AI usage, and centralized billing for small teams.
 
-- **Enterprise** - A paid plan for enterprise use that includes all Pro features, and more.
+- **Premium** - A paid plan for larger teams that need massive AI or diagram usage along with team collaboration, knowledge management, and security features like SSO.
 
-To learn more, visit our [Pricing](https://mermaidchart.com/pricing) page.
+- **Enterprise** - A paid plan for enterprise use that includes all Premium features, custom contracts, support, and more.
 
-Mermaid Chart is currently offering a 7-day free trial on our Pro and Enterprise tiers. Sign up for a free account at [Mermaid Chart](https://www.mermaidchart.com/app/sign-up).
+To learn more, visit our [Pricing](https://mermaid.ai/pricing) page.
+
+Sign up for a free account on the [Mermaid](https://mermaid.ai/app/sign-up) website and trial paid features at any time for 7 days free.
 
 ## Mermaid JS contributions
 
-First time contributors are eligible for a free Pro tier account for 1 year.
+First time contributors are eligible for a free Premium tier account for 1 year.
diff --git a/docs/intro/getting-started.md b/docs/intro/getting-started.md
@@ -130,7 +130,7 @@ And, here is the diagram view from the above example:
 
 ## 2. Using the Mermaid Chart Editor
 
-Available at the [Mermaid Chart](https://www.mermaidchart.com/) website.
+Available at the [Mermaid Chart](https://mermaid.ai/) website.
 
 Mermaid Chart is a web-based diagram editor that allows you to create and edit diagrams in your browser. It is built by the team behind Mermaid.
 
@@ -143,7 +143,7 @@ Features include:
 
 To learn more, visit the [Mermaid Chart page](/ecosystem/mermaid-chart.html) in the Ecosystem section of the documentation.
 
-Or go to the [Mermaid Chart website](https://www.mermaidchart.com/app/sign-up) to sign up for a Free account.
+Or go to the [Mermaid Chart website](https://mermaid.ai/app/sign-up) to sign up for a Free account.
 
 ## 3. Using Mermaid Plugins
 
@@ -157,13 +157,13 @@ For a list of Mermaid Plugins and Integrations, visit the [Integrations page](..
 
 Mermaid Chart plugins are available for:
 
-- [ChatGPT](https://docs.mermaidchart.com/plugins/mermaid-chart-gpt)
-- [JetBrains IDE](https://docs.mermaidchart.com/plugins/jetbrains-ide)
-- [Microsoft PowerPoint](https://docs.mermaidchart.com/plugins/microsoft-powerpoint)
-- [Microsoft Word](https://docs.mermaidchart.com/plugins/microsoft-word)
-- [Visual Studio Code](https://docs.mermaidchart.com/plugins/visual-studio-code)
+- [ChatGPT](https://mermaid.ai/docs/plugins/mermaid-chart-gpt)
+- [JetBrains IDE](https://mermaid.ai/docs/plugins/jetbrains-ide)
+- [Microsoft PowerPoint](https://mermaid.ai/docs/plugins/microsoft-powerpoint)
+- [Microsoft Word](https://mermaid.ai/docs/plugins/microsoft-word)
+- [Visual Studio Code](https://mermaid.ai/docs/plugins/visual-studio-code)
 
-To learn more, visit the [Mermaid Chart Plugins](https://www.mermaidchart.com/plugins) page.
+To learn more, visit the [Mermaid Chart Plugins](https://mermaid.ai/plugins) page.
 
 ### Native Mermaid Support
 

diff --git a/docs/news/announcements.md b/docs/news/announcements.md
@@ -22,7 +22,7 @@ We're thrilled to announce that Mermaid Chart has successfully raised $7.5 milli
 
 We are incredibly excited about the future and are grateful to the community, our team, and our investors for being part of this journey. Together, we're not just creating diagrams; we're designing the future of collaboration.
 
-🌐 Learn more about our groundbreaking tools and what's next for Mermaid Chart by visiting [our website](https://www.mermaidchart.com/blog/posts/mermaid-chart-raises-7.5m-to-reinvent-visual-collaoration-for-enterprises).
+🌐 Learn more about our groundbreaking tools and what's next for Mermaid Chart by visiting [our website](https://mermaid.ai/blog/posts/mermaid-chart-raises-7.5m-to-reinvent-visual-collaoration-for-enterprises).
 
 Thank you for being part of our story. Here's to creating, innovating, and collaborating on a global scale!
 
@@ -35,12 +35,12 @@ The Mermaid Chart team is excited to introduce a new Visual Editor for Flowchart
 Learn more:
 
 - Visual Editor For Flowcharts
-  - [Blog post](https://www.mermaidchart.com/blog/posts/mermaid-chart-releases-new-visual-editor-for-flowcharts)
+  - [Blog post](https://mermaid.ai/blog/posts/mermaid-chart-releases-new-visual-editor-for-flowcharts)
 
   - [Demo video](https://www.youtube.com/watch?v=5aja0gijoO0)
 
 - Visual Editor For Sequence diagrams
-  - [Blog post](https://www.mermaidchart.com/blog/posts/mermaid-chart-unveils-visual-editor-for-sequence-diagrams)
+  - [Blog post](https://mermaid.ai/blog/posts/mermaid-chart-unveils-visual-editor-for-sequence-diagrams)
 
   - [Demo video](https://youtu.be/imc2u5_N6Dc)