diff --git a/.hecat/url-check.yml b/.hecat/url-check.yml
index cf2856dcd6..cdbe414d65 100644
--- a/.hecat/url-check.yml
+++ b/.hecat/url-check.yml
@@ -15,9 +15,12 @@ steps:
         - '^https://docs.paperless-ngx.com/$' # DDoS protection page, always returns 403
         - '^https://demo.paperless-ngx.com/$' # DDoS protection page, always returns 403
         - '^https://git.dotclear.org/dev/dotclear$' # DDoS protection page, always returns 403
-        - '^https://github.com/clupasq/word-mastermind$' # the demo instance takes a long time to spin up, times out with the default 10s timeout
+        - '^https://word-mastermind.glitch.me/$' # the demo instance takes a long time to spin up, times out with the default 10s timeout
         - '^https://getgrist.com/$' # hecat/python-requests bug? 'Received response with content-encoding: gzip,br, but failed to decode it.'
         - '^https://www.uvdesk.com/$' # DDoS protection page, always returns 403
         - '^https://demo.uvdesk.com/$' # DDoS protection page, always returns 403
         - '^https://notes.orga.cat/$' # DDoS protection page, always returns 403
         - '^https://cytu.be$' # DDoS protection page, always returns 403
+        - '^https://demo.reservo.co/$' # hecat/python-requests bug? always returns 404 but the website works in a browser
+        - '^https://crates.io/crates/vigil-server$' # hecat/python-requests bug? always returns 404 but the website works in a browser
+        - '^https://nitter.net$' # always times out from github actions but the website works in a browser