Simply update Docker Desktop to the latest version via the app's settings. 2. For Linux (Ubuntu, Debian, CentOS, RHEL)
How to Install Docker Compose on Ubuntu (Step-by-Step Guide) download docker compose 3.9
If you have Docker Desktop installed, you already have Docker Compose. It is bundled with the application. Open your terminal and type docker compose version . Simply update Docker Desktop to the latest version
To , you do not actually download a file named "3.9." Instead, you install the Docker Compose V2 binary (or plugin), which natively supports the Version 3.9 file format . It is bundled with the application
Any version of Compose V2 (displayed as v2.x.x ) fully supports the version: "3.9" key in your YAML files.
The modern way to "download" Docker Compose is by installing the docker-compose-plugin package. Update your package index: sudo apt-get update Use code with caution. Install the plugin: sudo apt-get install docker-compose-plugin Use code with caution. Verify support for 3.9: docker compose version Use code with caution.
Docker has moved away from matching the software version number with the file format version number. As of 2026, the current software is (e.g., v2.30+), which uses the "Compose Specification". This specification is backward-compatible with all version: '3.9' configuration files. Quick Download & Installation Guide 1. For Windows and macOS