diff --git a/docs/source/conf.py b/docs/source/conf.py
index 5d6099eeb..34deb1dab 100644
--- a/docs/source/conf.py
+++ b/docs/source/conf.py
@@ -40,6 +40,7 @@
     "https://nvd.nist.gov/products/cpe",
     "https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml",
     "http://ftp.suse.com/pub/projects/security/yaml/",
+    r"https://nixos\.wiki/",  # NixOS wiki blocks CI bots with 403
 ]
 
 # Add any Sphinx extension module names here, as strings. They can be