diff --git a/headers.ts b/headers.ts
new file mode 100644
index 0000000000..74a3fae5a7
--- /dev/null
+++ b/headers.ts
@@ -0,0 +1,105 @@
+type LooseObject = {
+  [key: string]: string | number | boolean;
+};
+
+type AxiosHeaders = LooseObject & {
+  'Accept'?: string;
+  'Accept-CH'?: string;
+  'Accept-CH-Lifetime'?: string;
+  'Accept-Charset'?: string;
+  'Accept-Encoding'?: string;
+  'Accept-Language'?: string;
+  'Accept-Patch'?: string;
+  'Accept-Ranges'?: string;
+  'Access-Control-Allow-Credentials'?: string;
+  'Access-Control-Allow-Headers'?: string;
+  'Access-Control-Allow-Methods'?: string;
+  'Access-Control-Allow-Origin'?: string;
+  'Access-Control-Expose-Headers'?: string;
+  'Access-Control-Max-Age'?: string;
+  'Access-Control-Request-Headers'?: string;
+  'Access-Control-Request-Method'?: string;
+  'Age'?: string;
+  'Allow'?: string;
+  'Alt-Svc'?: string;
+  'Authorization'?: string;
+  'Cache-Control'?: string;
+  'Clear-Site-Data'?: string;
+  'Connection'?: string;
+  'Content-Disposition'?: string;
+  'Content-Encoding'?: string;
+  'Content-Language'?: string;
+  'Content-Length'?: string;
+  'Content-Location'?: string;
+  'Content-Range'?: string;
+  'Content-Security-Policy'?: string;
+  'Content-Security-Policy-Report-Only'?: string;
+  'Content-Type'?: string;
+  'Cookie'?: string;
+  'Cookie2'?: string;
+  'Cross-Origin-Resource-Policy'?: string;
+  'DNT'?: string;
+  'DPR'?: string;
+  'Date'?: string;
+  'Device-Memory'?: string;
+  'Digest'?: string;
+  'ETag'?: string;
+  'Early-Data'?: string;
+  'Expect'?: string;
+  'Expect-CT'?: string;
+  'Expires'?: string;
+  'Feature-Policy'?: string;
+  'Forwarded'?: string;
+  'From'?: string;
+  'Host'?: string;
+  'If-Match'?: string;
+  'If-Modified-Since'?: string;
+  'If-None-Match'?: string;
+  'If-Range'?: string;
+  'If-Unmodified-Since'?: string;
+  'Index'?: string;
+  'Keep-Alive'?: string;
+  'Large-Allocation'?: string;
+  'Last-Modified'?: string;
+  'Link'?: string;
+  'Location'?: string;
+  'Origin'?: string;
+  'Pragma'?: string;
+  'Proxy-Authenticate'?: string;
+  'Proxy-Authorization'?: string;
+  'Public-Key-Pins'?: string;
+  'Public-Key-Pins-Report-Only'?: string;
+  'Range'?: string;
+  'Referer'?: string;
+  'Referrer-Policy'?: string;
+  'Retry-After'?: string;
+  'Save-Data'?: string;
+  'Sec-WebSocket-Accept'?: string;
+  'Server'?: string;
+  'Server-Timing'?: string;
+  'Set-Cookie'?: string;
+  'Set-Cookie2'?: string;
+  'SourceMap'?: string;
+  'Strict-Transport-Security'?: string;
+  'TE'?: string;
+  'Timing-Allow-Origin'?: string;
+  'Tk'?: string;
+  'Trailer'?: string;
+  'Transfer-Encoding'?: string;
+  'Upgrade-Insecure-Requests'?: string;
+  'User-Agent'?: string;
+  'Vary'?: string;
+  'Via'?: string;
+  'WWW-Authenticate'?: string;
+  'Want-Digest'?: string;
+  'Warning'?: string;
+  'Content-Type-Options'?: string;
+  'DNS-Prefetch-Control'?: string;
+  'Forwarded-For'?: string;
+  'Forwarded-Host'?: string;
+  'Forwarded-Proto'?: string;
+  'Frame-Options'?: string;
+  'XSS-Protection'?: string;
+};
+
+export default AxiosHeaders;
diff --git a/index.d.ts b/index.d.ts
index 74b2acd2cc..f0fadab556 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -1,5 +1,7 @@
+import AxiosHeaders from './headers';
+
 export interface AxiosTransformer {
-  (data: any, headers?: any): any;
+  (data: any, headers?: AxiosHeaders): any;
 }
 
 export interface AxiosAdapter {
@@ -47,7 +49,7 @@ export interface AxiosRequestConfig {
   baseURL?: string;
   transformRequest?: AxiosTransformer | AxiosTransformer[];
   transformResponse?: AxiosTransformer | AxiosTransformer[];
-  headers?: any;
+  headers?: AxiosHeaders;
   params?: any;
   paramsSerializer?: (params: any) => string;
   data?: any;
@@ -77,7 +79,7 @@ export interface AxiosResponse<T = any>  {
   data: T;
   status: number;
   statusText: string;
-  headers: any;
+  headers: AxiosHeaders;
   config: AxiosRequestConfig;
   request?: any;
 }