diff --git a/Doc/conf.py b/Doc/conf.py
index d7effe2572e..545049bb460 100644
--- a/Doc/conf.py
+++ b/Doc/conf.py
@@ -43,6 +43,7 @@ extensions = [
 
 # Skip if downstream redistributors haven't installed them
 _OPTIONAL_EXTENSIONS = (
+    'linklint.ext',
     'notfound.extension',
     'sphinxext.opengraph',
 )
diff --git a/Doc/requirements.txt b/Doc/requirements.txt
index d0107744ecb..536ae57e4ef 100644
--- a/Doc/requirements.txt
+++ b/Doc/requirements.txt
@@ -18,4 +18,6 @@ sphinx-notfound-page~=1.0.0
 # to install that as well.
 python-docs-theme>=2023.3.1,!=2023.7
 
+linklint
+
 -c constraints.txt