diff --git a/request/request.d.ts b/request/request.d.ts
index da1491687..ba07bf4dd 100644
--- a/request/request.d.ts
+++ b/request/request.d.ts
@@ -86,7 +86,7 @@ declare module 'request' {
 			qs?: any;
 			json?: any;
 			multipart?: RequestPart[] | Multipart;
-            agent?: http.Agent;
+			agent?: http.Agent | https.Agent;
 			agentOptions?: any;
 			agentClass?: any;
 			forever?: any;