diff --git a/doc/conf.py b/doc/conf.py
index 8b46e10c60..0638290cd1 100644
--- a/doc/conf.py
+++ b/doc/conf.py
@@ -197,6 +197,7 @@
 
         # NewConnectionError looks like information is wrong
         r'http://udig.refractions.net',
+        r'https://sgx.geodatenzentrum.de',
 
         # link exists but does not accept robots and linkchecker is a robot
         # used in overview/mapserver_overview
@@ -245,6 +246,10 @@
         'https://www.ntua.gr/en',
         'https://www.ice.ucdavis.edu/',
 
+        # redirect exists but link check fails
+        # SSL: CERTIFICATE_VERIFY_FAILED
+        r'https://ghsl.jrc.ec.europa.eu/ghs_pop.php',
+
         # Link to the presentation
         r'presentation.html',