diff --git a/dist/index.js b/dist/index.js
index 520fdd1..156b3c4 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -19669,6 +19669,9 @@ function httpRedirectFetch (fetchParams, response) {
     // https://fetch.spec.whatwg.org/#cors-non-wildcard-request-header-name
     request.headersList.delete('authorization')
 
+    // https://fetch.spec.whatwg.org/#authentication-entries
+    request.headersList.delete('proxy-authorization', true)
+
     // "Cookie" and "Host" are forbidden request-headers, which undici doesn't implement.
     request.headersList.delete('cookie')
     request.headersList.delete('host')