diff --git a/index.d.ts b/index.d.ts
index 08a0be3..32c4fcf 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -77,7 +77,8 @@ export interface AxiosRequestConfig<T = any> {
   proxy?: AxiosProxyConfig | false;
   cancelToken?: CancelToken;
   decompress?: boolean;
-  transitional?: TransitionalOptions
+  transitional?: TransitionalOptions;
+  insecureHTTPParser?: boolean
 }
 
 export interface AxiosResponse<T = never>  {