diff --git a/scrape_costco.py b/scrape_costco.py
index edf20b3..9f2a147 100644
--- a/scrape_costco.py
+++ b/scrape_costco.py
@@ -286,7 +286,7 @@ def load_costco_browser_headers(profile_dir, authorization, client_id, client_id
 def build_session(profile_dir, auth_headers):
     session = requests.Session()
     session.cookies.update(load_firefox_cookies(".costco.com", profile_dir))
-    session.headers.update(build_headers())
+    session.headers.update(build_headers(auth_headers))
     session.headers.update(auth_headers)
     return session