diff --git a/pkg/commands/domainv1/update.go b/pkg/commands/domainv1/update.go
new file mode 100644
index 000000000..ecf838d75
--- /dev/null
+++ b/pkg/commands/domainv1/update.go
@@ -0,0 +1,71 @@
+package domainv1
+
+import (
+	"errors"
+	"fmt"
+	"io"
+
+	"github.com/fastly/go-fastly/v9/fastly"
+	v1 "github.com/fastly/go-fastly/v9/fastly/domains/v1"
+
+	"github.com/fastly/cli/pkg/argparser"
+	"github.com/fastly/cli/pkg/global"
+	"github.com/fastly/cli/pkg/text"
+)
+
+// UpdateCommand calls the Fastly API to update domains.
+type UpdateCommand struct {
+	argparser.Base
+	domainID  string
+	serviceID string
+}
+
+// NewUpdateCommand returns a usable command registered under the parent.
+func NewUpdateCommand(parent argparser.Registerer, g *global.Data) *UpdateCommand {
+	c := UpdateCommand{
+		Base: argparser.Base{
+			Globals: g,
+		},
+	}
+	c.CmdClause = parent.Command("update", "Update a domain")
+
+	// Required.
+	c.CmdClause.Flag("domain-id", "The Domain Identifier (UUID)").Required().StringVar(&c.domainID)
+
+	// Optional
+	c.CmdClause.Flag("service-id", "The service_id associated with your domain (omit to unset)").StringVar(&c.serviceID)
+
+	return &c
+}
+
+// Exec invokes the application logic for the command.
+func (c *UpdateCommand) Exec(_ io.Reader, out io.Writer) error {
+	input := &v1.UpdateInput{
+		DomainID: &c.domainID,
+	}
+	if c.serviceID != "" {
+		input.ServiceID = &c.serviceID
+	}
+
+	fc, ok := c.Globals.APIClient.(*fastly.Client)
+	if !ok {
+		return errors.New("failed to convert interface to a fastly client")
+	}
+
+	d, err := v1.Update(fc, input)
+	if err != nil {
+		c.Globals.ErrLog.AddWithContext(err, map[string]any{
+			"Domain ID":  c.domainID,
+			"Service ID": c.serviceID,
+		})
+		return err
+	}
+
+	serviceOutput := ""
+	if d.ServiceID != nil {
+		serviceOutput = fmt.Sprintf(", service-id: %s", *d.ServiceID)
+	}
+
+	text.Success(out, "Updated domain '%s' (domain-id: %s%s)", d.FQDN, d.DomainID, serviceOutput)
+	return nil
+}