diff --git a/packages/client/src/core.ts b/packages/client/src/core.ts
index 10025b8b4..667f88974 100644
--- a/packages/client/src/core.ts
+++ b/packages/client/src/core.ts
@@ -657,7 +657,7 @@ export type TextMatch = { contains: string } | { startsWith: string } | { endsWi
  */
 export type ThumbKey = { shard_hex: string; cas_id: CasId; base_directory_str: string }
 
-export type UpdateThumbnailerPreferences = { background_processing_percentage: number }
+export type UpdateThumbnailerPreferences = Record<string, never>
 
 export type VideoProps = { pixel_format: string | null; color_range: string | null; bits_per_channel: number | null; color_space: string | null; color_primaries: string | null; color_transfer: string | null; field_order: string | null; chroma_location: string | null; width: number; height: number; aspect_ratio_num: number | null; aspect_ratio_den: number | null; properties: string[] }