Self-hosted Retool stable releases - 2026
Release notes for all stable channel releases of Self-hosted Retool in 2026.
Retool releases a version on the stable channel each quarter. A stable release is generally four versions behind the cloud-hosted version at the time.
Preparation and testing of a stable version occurs approximately four weeks prior to its release. Stable releases are rigorously tested before they are published. As the release cycle is less frequent, administrators can more easily maintain and upgrade deployments.
Retool supports each stable release for six months. During this time, Retool will release patch updates that contain bug fixes or security updates. Patch updates do not contain functionality changes and can be applied more quickly than performing a full version upgrade.
Retool provides versioned product documentation for supported stable releases. When browsing Retool Docs, use the version dropdown menu in the navbar to switch to a relevant version.
After six months, a stable release is considered deprecated. You can continue using a deprecated release but it will no longer receive updates. At this time, you should upgrade to the latest stable release.
Self-hosted Retool 4.0
Latest releaseCurrently supported
| Release | Released | Digest | |
|---|---|---|---|
| First | 4.0.0 | Jun 11, 2026 | sha256:673b37866382cf034fc4ea4b4e005b5f1405bd36107e6e905d81e30b1f781b68 |
| Latest | 4.0.3 | Jun 24, 2026 | sha256:20cdfc87e8ee53d441fdfb9453416e2e7bb7799df7216e9db3139616c1bb5d28 |
Major changes in this release
New features, significant changes, and any actions required when upgrading.
| Type ↕ | Change ↑ |
|---|---|
| new | Analytics for Retool Workflows Monitor run counts, failure rates, latency, and resource usage across your workflows. |
| new | Build apps via MCP Build Retool apps using an MCP-connected AI coding agent. |
| new | Configurable memory limits for workflow code execution Configure memory limits for workflow code execution at the org or workflow level. |
| new | Hardened images in stable channel Security-hardened Docker images are now available for stable channel deployments. |
| new | MCP server for Retool MCP server for managing your Retool organization and users. |
| new | Python runtime version selector Select the Python runtime version for your workflow, with support for Python 3.14. |
| new | React app import Import existing React applications into the new Retool app builder. |
| new | Redesigned Workflows landing page The Workflows landing page has a new design, now available for all self-hosted deployments. |
| new | Retool 4.0 database migration Self-hosted Retool 4.0 runs an automatic database migration to prepare for Role-Based Access Control. |
| new | Retool 4.0 upgrade FAQ Common questions about upgrading to Retool 4.0. |
| new | Retool's new app builder Retool's new React-based app builder is now available on self-hosted. |
| new | Source control for apps Source control support for apps in the new app builder. |
| new | Update notifications for self-hosted admins Self-hosted admins now see a banner when a new Retool release or patch update is available. |
| new | View audit logs across spaces Organization admins can view audit logs across all spaces from a single page. |
| 14 changes | |
Patch release notes
Bug fixes, improvements, and other incremental updates across all patch releases in this release.
| Type | Description |
|---|---|
| 4.0.38 changes↓ | |
| 4.0.24 changes↓ | |
| 4.0.17 changes↓ | |
| 4.0.0447 changes↓ | |
| 466 changes | |
Self-hosted Retool 3.334
Currently supported
| Release | Released | Digest | |
|---|---|---|---|
| First | 3.334.0 | Mar 3, 2026 | sha256:6144a2cf9e7110f06d69a28959b9fb4a855cb93d4f30f2896ec07876360f4bb9 |
| Latest | 3.334.20 | Jun 24, 2026 | sha256:ca9d69f1e70fd6891acf570326531d27a759b6e18010157367f1d812779b793b |
Major changes in this release
New features, significant changes, and any actions required when upgrading.
| Type ↕ | Change ↑ |
|---|---|
| new | Agents supports A2A protocol A2A protocol support for triggering Retool agents from external agents is now available. |
| new | Ask and Build mode with Assist Users can toggle between exploration and building modes in Assist. |
| new | Assist supports Azure OpenAI Assist supports Azure OpenAI as a single model provider. |
| new | Assist supports multipage Assist now supports creating and editing multipage apps. |
| new | Assist thread summarization Assist automatically summarizes long threads. |
| deprecated | Baseten models updated DeepSeek-V3.2 is now supported in Baseten, replacing the deprecated DeepSeek-R1. |
| new | Create README files for workflows Create a README file in a workflow |
| new | Google Gemini 3 Pro Preview available in Retool Google Gemini 3 Pro Preview is now available in Retool. |
| new | Google Slides integration New integration with Google Slides |
| new | Hardened images available in stable channel Optionally use security-hardened images for stable releases. |
| new | Improvements to editing with Assist Retool made improvements to the quality and speed of layout edits with Assist. |
| new | Improvements to writing SQL with Assist Retool made improvements to the quality of SQL queries written with Assist. |
| new | LICENSE_KEY required for multiplayer on self-hosted in Q3 2026 LICENSE_KEY is required for multiplayer on self-hosted starting in Q3 2026. |
| new | Multi-instance releases for Source Control Multi-instance releases for Source Control are now generally available. |
| new | Multiple Secrets Manager configurations beta Self-hosted organizations can now create multiple Secrets Manger configurations and retrieve secrets from different locations. |
| new | New version of Microsoft SQL Server integration, planned deprecation of Version 1 and Version 2 A new version of the Microsoft SQL Server integration is available. Version 1 and Version 2 will be deprecated in the 2026 Q3 stable release. |
| new | OpenAI GPT-5.1 available in Retool OpenAI GPT-5.1 is now available in Retool. |
| new | OpenAI GPT-5.2 available in Retool Retool now supports GPT-5.2. |
| new | Resource type restrictions for self-hosted Retool Self-hosted organizations can prevent users from creating or using certain types of resources. |
| new | Role-based access controls for Assist Assist now supports role-based access controls. |
| new | Theming with Assist Retool now supports additional controls for configuring your app theme with Assist. |
| new | Unpublish a workflow release Unpublish a release on protected and unprotected workflows. |
| 22 changes | |
Patch release notes
Bug fixes, improvements, and other incremental updates across all patch releases in this release.
| Type | Description |
|---|---|
| 3.334.203 changes↓ | |
| 3.334.196 changes↓ | |
| 3.334.185 changes↓ | |
| 3.334.171 change↓ | |
| 3.334.163 changes↓ | |
| 3.334.154 changes↓ | |
| 3.334.145 changes↓ | |
| 3.334.131 change↓ | |
| 3.334.122 changes↓ | |
| 3.334.112 changes↓ | |
| 3.334.103 changes↓ | |
| 3.334.92 changes↓ | |
| 3.334.85 changes↓ | |
| 3.334.74 changes↓ | |
| 3.334.51 change↓ | |
| 3.334.41 change↓ | |
| 3.334.31 change↓ | |
| 3.334.17 changes↓ | |
| 3.334.0197 changes↓ | |
| 253 changes | |