Subject: Scope update for [project name] — approval requested

Hi [client name],

Following our discussion, the requested change is: [describe the additional or changed work].

The current agreed scope includes [relevant original scope]. The proposed update would add or change:
[deliverables and exclusions]

The additional fee would be [currency and amount], and the revised delivery date would be [date], assuming [dependencies]. All other agreed terms would remain unchanged unless stated here.

Please confirm approval of the updated scope, fee and timing before we begin this additional work. I can provide an updated quote if helpful.

Best,
[your name]