diff --git a/.github/boring-cyborg.yml b/.github/boring-cyborg.yml
index 586cb3aba..7ccb43e29 100644
--- a/.github/boring-cyborg.yml
+++ b/.github/boring-cyborg.yml
@@ -73,7 +73,7 @@ firstIssueWelcomeComment: >
   Also please follow the issue template, as it helps both you and other community members contribute more effectively.
   
   <br>If your issue is a feature request, others may raise its prominence through
-  [feature voting](https://6.docs.plone.org/contributing/documentation/index.html#github-menu).
+  [feature voting](https://github.com/plone/documentation/issues?q=is%3Aissue%20state%3Aopen%20sort%3Areactions-%2B1-desc%20).
 
   <br>Welcome to the Plone community! :tada:
 
diff --git a/docs/conf.py b/docs/conf.py
index 8b5658349..3620b2744 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -105,6 +105,7 @@
     r"https://browsersl.ist/#",
     # Ignore unreliable sites
     r"https://web.archive.org/",
+    r"https://www.gnu.org/",  # Consider removal when upgrading Sphinx
     r"http://z3c.pt",  # fluke where Sphinx interprets this as a URL
 ]
 linkcheck_allowed_redirects = {