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

# Update topic

> Update an existing topic

## Update

Update a topic using the default context.

```go theme={null}
func (s *TopicsSvcImpl) Update(topicId string, params *UpdateTopicRequest) (*UpdateTopicResponse, error)
```

### Parameters

<ParamField path="topicId" type="string" required>
  The ID of the topic to update.
</ParamField>

<ParamField path="params" type="*UpdateTopicRequest" required>
  The topic update parameters.
</ParamField>

### Returns

Returns an `*UpdateTopicResponse` containing the updated topic ID.

### Example

```go theme={null}
updateParams := &resend.UpdateTopicRequest{
  Name:        "Updated Newsletter",
  Description: "Our updated monthly newsletter",
}

response, err := client.Topics.Update("topic_123", updateParams)
if err != nil {
  panic(err)
}

fmt.Println("Topic updated:", response.Id)
```

***

## UpdateWithContext

Update a topic with a custom context.

```go theme={null}
func (s *TopicsSvcImpl) UpdateWithContext(ctx context.Context, topicId string, params *UpdateTopicRequest) (*UpdateTopicResponse, error)
```

### Parameters

<ParamField path="ctx" type="context.Context" required>
  Context for the request, useful for timeouts and cancellation.
</ParamField>

<ParamField path="topicId" type="string" required>
  The ID of the topic to update.
</ParamField>

<ParamField path="params" type="*UpdateTopicRequest" required>
  The topic update parameters.
</ParamField>

### Returns

Returns an `*UpdateTopicResponse` containing the updated topic ID.

### Example

```go theme={null}
ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
defer cancel()

updateParams := &resend.UpdateTopicRequest{
  Name:        "Weekly Digest",
  Description: "Weekly summary of top content",
}

response, err := client.Topics.UpdateWithContext(ctx, "topic_123", updateParams)
if err != nil {
  panic(err)
}
```

***

## Types

### UpdateTopicRequest

Request payload for updating a topic.

```go theme={null}
type UpdateTopicRequest struct {
  Name        string `json:"name,omitempty"`
  Description string `json:"description,omitempty"`
}
```

<ParamField path="Name" type="string">
  The updated name of the topic.
</ParamField>

<ParamField path="Description" type="string">
  The updated description of the topic.
</ParamField>

<Note>
  The `default_subscription` field cannot be changed after topic creation.
</Note>

### UpdateTopicResponse

Response from updating a topic.

```go theme={null}
type UpdateTopicResponse struct {
  Id string `json:"id"`
}
```

<ResponseField name="Id" type="string">
  The unique identifier of the updated topic.
</ResponseField>