diff --git a/package.json b/package.json
index 733519703b0..f7d7bfd5b9a 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "undici",
-  "version": "6.10.1",
+  "version": "6.10.2",
   "description": "An HTTP/1.1 client, written from scratch for Node.js",
   "homepage": "https://undici.nodejs.org",
   "bugs": {
diff --git a/types/diagnostics-channel.d.ts b/types/diagnostics-channel.d.ts
index 85d44823978..a037d1e0b2c 100644
--- a/types/diagnostics-channel.d.ts
+++ b/types/diagnostics-channel.d.ts
@@ -9,8 +9,7 @@ declare namespace DiagnosticsChannel {
     completed: boolean;
     method?: Dispatcher.HttpMethod;
     path: string;
-    headers: string;
-    addHeader(key: string, value: string): Request;
+    headers: any;
   }
   interface Response {
     statusCode: number;