From 37952b0918aec148397fb2aa891c66731226522b Mon Sep 17 00:00:00 2001
From: Nuno Ribeiro <nmpribeiro@gmail.com>
Date: Thu, 6 Jan 2022 11:29:01 +0100
Subject: [PATCH] Fixes YahooOptions requests yielding 'Forbidden'

---
 pandas_datareader/_utils.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/pandas_datareader/_utils.py b/pandas_datareader/_utils.py
index 245cb33a..33338c1f 100644
--- a/pandas_datareader/_utils.py
+++ b/pandas_datareader/_utils.py
@@ -56,6 +56,7 @@ def _sanitize_dates(start, end):
 def _init_session(session):
     if session is None:
         session = requests.Session()
+        session.headers.update({'User-Agent': 'Firefox'})
         # do not set requests max_retries here to support arbitrary pause
     else:
         if not isinstance(session, requests.Session):