diff --git a/types/puppeteer/index.d.ts b/types/puppeteer/index.d.ts
index 202cc05181..813f256835 100644
--- a/types/puppeteer/index.d.ts
+++ b/types/puppeteer/index.d.ts
@@ -2061,10 +2061,10 @@ export interface ConnectOptions {
 }
 
 export interface ConnectionTransport {
-  send: (message: string) => void;
-  close: () => void;
-  onmessage?: (message: string) => void;
-  onclose?: () => void;
+  send(message: string): void;
+  close(): void;
+  onmessage?(message: string): void;
+  onclose?(): void;
 }
 
 export interface CDPSession extends EventEmitter {