[Home](./index.md) > [@firebase/auth](./auth.md) > [updateProfile](./auth.updateprofile.md) ## updateProfile() function Updates a user's profile data. Signature: ```typescript export declare function updateProfile(user: User, { displayName, photoURL: photoUrl }: { displayName?: string | null; photoURL?: string | null; }): Promise; ``` ## Parameters | Parameter | Type | Description | | --- | --- | --- | | user | [User](./auth.user.md) | The user. | | { displayName, photoURL: photoUrl } | { displayName?: string \| null; photoURL?: string \| null; } | | Returns: Promise<void>