diff --git a/docs/conf.py b/docs/conf.py
index 6a6b14456..2265134d4 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -79,6 +79,8 @@
      # we have links to localhost for explanatory purposes; obviously
      # they will never work in the linkchecker
      r'^http://localhost:\d+',
+     # This URL will fail and return 403 (broken).
+     r'^https://academic\.oup\.com/bioinformatics/article/34/23/4121/5001388',
 ]
 linkcheck_anchors_ignore_for_url = [
      # Github uses anchor-looking links for highlighting lines but