diff --git a/CONTRIBUTING.rst b/CONTRIBUTING.rst
index f3804df1..64c33942 100644
--- a/CONTRIBUTING.rst
+++ b/CONTRIBUTING.rst
@@ -97,7 +97,7 @@ As an exception to this rule, this specific document cannot be changed
 without the consensus of all administrators of the project.
 
    Note: Those guidelines were inspired by the `Collective Code
-   Construct Contract <https://rfc.zeromq.org/spec:42/C4/>`__. The
+   Construction Contract <https://rfc.zeromq.org/spec/42/>`__. The
    document was found to be a little too complex and hard to read and
    wasn’t adopted in its entirety. See this
    `discussion <https://github.com/zeromq/rfc/issues?utf8=%E2%9C%93&q=author%3Aanarcat%20>`__
diff --git a/linkcheck/robotparser2.py b/linkcheck/robotparser2.py
index 1d827d76..59974ada 100644
--- a/linkcheck/robotparser2.py
+++ b/linkcheck/robotparser2.py
@@ -17,7 +17,7 @@
 Robots.txt parser.
 
 The robots.txt Exclusion Protocol is implemented as specified in
-http://www.robotstxt.org/wc/norobots-rfc.html
+https://www.robotstxt.org/norobots-rfc.txt
 """
 import time
 import urllib.parse