diff --git a/types/passport-google-oauth20/index.d.ts b/types/passport-google-oauth20/index.d.ts
index f6e09454da..478a14b2e0 100644
--- a/types/passport-google-oauth20/index.d.ts
+++ b/types/passport-google-oauth20/index.d.ts
@@ -16,6 +16,7 @@ export type OAuth2StrategyOptionsWithoutRequiredURLs = Pick<
 >;
 
 export interface _StrategyOptionsBase extends OAuth2StrategyOptionsWithoutRequiredURLs {
+    accessType?: 'offline' | 'online';
     authorizationURL?: string;
     callbackURL?: string;
     clientID: string;