diff --git a/src/index.ts b/src/index.ts
index f40a67ca2..6cc798801 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -181,6 +181,4 @@ export class Octokit {
 
   // TODO: type `octokit.auth` based on passed options.authStrategy
   auth: (...args: unknown[]) => Promise<unknown>;
-
-  [key: string]: any;
 }