1 files changed, 1 insertions, 1 deletions
diff --git a/cli/dts/lib.deno.shared_globals.d.ts b/cli/dts/lib.deno.shared_globals.d.ts
index 8e97fe014..c9423b5f3 100644
--- a/cli/dts/lib.deno.shared_globals.d.ts
+++ b/cli/dts/lib.deno.shared_globals.d.ts
@@ -1489,7 +1489,7 @@ interface WebSocket extends EventTarget {
    */
   readonly extensions: string;
   onclose: ((this: WebSocket, ev: CloseEvent) => any) | null;
-  onerror: ((this: WebSocket, ev: Event) => any) | null;
+  onerror: ((this: WebSocket, ev: Event | ErrorEvent) => any) | null;
   onmessage: ((this: WebSocket, ev: MessageEvent) => any) | null;
   onopen: ((this: WebSocket, ev: Event) => any) | null;
   /**