On August 27, 2024, Portainer switched from version 2.19.5 to the new stable 2.21.0 version. It’s mandatory to upgrade since multiple important issues have been fixed in this new version. Portainer 2.21.0 applies various fixes to increase the overall stability of Portainer. Specific adjustments have been made to improve the usage of Portainer at scale, ensuring better performance and reliability in larger environments. Critical and high-security vulnerabilities (CVEs) associated with dependencies shipped within the Portainer images have been addressed. This includes updates to key components like the Docker client and kubectl to ensure a secure environment.
🚀Portainer 2.21.0 Full Changelog
📋Install Portainer 2.21.0 On Your Synology NAS
📋How to Update Portainer to Version 2.21.0
📋How to Activate Dark Mode in Portainer 2.21.0
📋How to Change Portainer Logo With Your Own Logo in Portainer 2.21.0
📋How to Update Your Docker Containers Using Portainer 2.21.0
What is Portainer? Portainer is a really awesome web UI for Docker. Portainer is a lightweight management UI which allows you to easily manage your different Docker environments (Docker hosts or Swarm clusters). Portainer is meant to be as simple to deploy as it is to use thanks to its user-friendly interface.
This post was updated on Sunday / October 18th, 2026 at 10:43 PM