> ## Documentation Index
> Fetch the complete documentation index at: https://docs.markifact.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Update Version

> Updates a Google Tag Manager container version's name or description

Updates a Google Tag Manager container version's name or description.

| | |
| - | - |
| **App** | Google Tag Manager |
| **Operation ID** | `gtm_update_version` |
| **Type** | Action |
| **Connection** | `gtm` (required) |
| **Credits per run** | 1 |
| **Agent / MCP tool** | Yes |
| **Requires approval** | Yes (write operation) |

## Inputs

| Field | Type | Required | Default | Description |
| - | - | - | - | - |
| `account` | DynamicAccount | Yes | - | Select the Google Tag Manager account. |
| `container` | DynamicAccount | Yes | - | Select the container. |
| `version` | DynamicAccount | Yes | - | Select the container version, or provide a version ID from gtm\_list\_versions or gtm\_create\_version. |
| `name` | string | No | - | New name for the version. |
| `description` | string | No | - | New description for the version. |

## Output

**Type**: `Dict`

Returns the updated containerVersion as provided by the Tag Manager API.


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