diff --git a/docs/source/conf.py b/docs/source/conf.py
index 5a4f2134..f7931d51 100644
--- a/docs/source/conf.py
+++ b/docs/source/conf.py
@@ -230,6 +230,8 @@
     "https://www.biorxiv.org", # 403 Client Error: Forbidden
     "https://mousespinal.brain-map.org",
     "https://gin.g-node.org", # often down, or throttling many requests
+    "https://openalex.org", # 403 Client Error: Forbidden
+    "https://data.mendeley.com/", # 403 Client Error: Forbidden
     ]
 
 linkcheck_anchors_ignore_for_url = [