**Issues deploying your Python app?** See [Troubleshooting Python Deploys](/content/docs/troubleshooting-python-deploys/index.html).

| Current default Python version | Minimum supported Python version |
| --- | --- |
| **`3.14.3`**<br>Services created before **2026-02-11** have a different default version. [See below](/content/docs/python-version#history-of-default-python-versions/index.html). | **`3.7.3`** |

**Set a different Python version in _any_ of the following ways** (in descending order of precedence):

1. Set your service's `PYTHON_VERSION` [environment variable](/content/docs/configure-environment-variables/index.html) to a _fully qualified_ Python version (e.g., `3.13.5`). You can specify any released version from `3.7.3` onward.

You _must_ specify a fully qualified version (e.g., `3.13.5`) if you use this method.

2. Add a file named `.python-version` to the root of your repo. This file contains a single line with the version to use:

```
3.13.5
```

You _can_ omit the patch version (e.g., `3.13`) if you use this method. If you omit it, Render uses the latest corresponding patch version.

Render doesn't support unreleased Python versions natively, but you can use them via [Render's Docker support](/content/docs/docker/index.html).

## Versioning package managers

You can also set versions for the following Python package managers:

| Package manager | Environment variable |
| --- | --- |
| [uv](/content/docs/uv-version/index.html) | `UV_VERSION`<br>To use uv, a `uv.lock` file must be present in your service's root directory. [Learn more](/content/docs/uv-version/index.html). |
| [Poetry](/content/docs/poetry-version/index.html) | `POETRY_VERSION` |

## History of default Python versions

If you don't set a Python version for your service, Render's default version depends on when you originally created the service:

| Service Creation Date | Default Python Version |
| --- | --- |
| `2026-02-11` and later | `3.14.3` |
| `2025-06-12` to `2026-02-11` | `3.13.4` |
| `2024-12-16` to `2025-06-12` | `3.11.11` |
| `2024-10-29` to `2024-12-16` | `3.11.10` |
| `2024-04-04` to `2024-10-29` | `3.11.9` |
| `2024-02-22` to `2024-04-04` | `3.11.8` |
| `2024-01-02` to `2024-02-22` | `3.11.7` |
| `2023-12-04` to `2024-01-02` | `3.11.6` |
| Before `2023-11-01` | `3.7.10` |