diff --git a/.changeset/dirty-bottles-hug.md b/.changeset/dirty-bottles-hug.md
new file mode 100644
index 0000000000..d0bf97e79d
--- /dev/null
+++ b/.changeset/dirty-bottles-hug.md
@@ -0,0 +1,6 @@
+---
+"@pnpm/network.auth-header": patch
+"pnpm": patch
+---
+
+Improve the performance of searching for auth tokens.
diff --git a/network/auth-header/src/index.ts b/network/auth-header/src/index.ts
index a2ef6aefb0..8315dcd188 100644
--- a/network/auth-header/src/index.ts
+++ b/network/auth-header/src/index.ts
@@ -40,6 +40,6 @@ function getAuthHeaderByURI (authHeaders: Record<string, string>, maxParts: numb
 function removePort (originalUrl: string) {
   const urlObj = new URL(originalUrl)
   if (urlObj.port === '') return originalUrl
-  const newUrlObj = new URL(`${urlObj.protocol}//${urlObj.hostname}${urlObj.pathname}${urlObj.search}${urlObj.hash}`)
-  return newUrlObj.toString()
+  urlObj.port = ''
+  return urlObj.toString()
 }