diff --git a/src/index.ts b/src/index.ts
index 9952fe6..319dec7 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -2,7 +2,7 @@ import type { InitializedProvider, Provider, ResolveFontOptions, ResolveFontResu
 import { createAsyncStorage, memoryStorage, type Storage } from './cache'
 
 export * as providers from './providers'
-export type { FontFaceData, LocalFontSource, Provider, ProviderContext, ProviderDefinition, ProviderFactory, RemoteFontSource, ResolveFontOptions } from './types'
+export type { FontFaceData, FontStyles, LocalFontSource, Provider, ProviderContext, ProviderDefinition, ProviderFactory, RemoteFontSource, ResolveFontOptions } from './types'
 export { defineFontProvider } from './utils'
 
 export interface UnifontOptions {
diff --git a/src/types.ts b/src/types.ts
index 4237c43..ebcc8a3 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -10,9 +10,11 @@ export interface ProviderContext {
   }
 }
 
+export type FontStyles = 'normal' | 'italic' | 'oblique'
+
 export interface ResolveFontOptions {
   weights: string[]
-  styles: Array<'normal' | 'italic' | 'oblique'>
+  styles: FontStyles[]
   // TODO: improve support and support unicode range
   subsets: string[]
   fallbacks?: string[]