diff --git a/src/types.ts b/src/types.ts
index ce00a8e..ad268c4 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -12,7 +12,7 @@ export interface CustomFontFace {
   source: string
   name: string
   basename: string
-  weight: number
+  weight: number | `${number} ${number}`
   style: string
   display: string
   local?: string | string[]