diff --git a/pep-0419.txt b/pep-0419.txt
index 1387d8d06..40fd99caf 100644
--- a/pep-0419.txt
+++ b/pep-0419.txt
@@ -506,27 +506,15 @@ References
    https://github.com/sampsyo/bluelet
 
 .. [3] Twisted: inlineCallbacks
-   http://twistedmatrix.com/documents/8.1.0/api/twisted.internet.defer.html
+   https://twisted.org/documents/8.1.0/api/twisted.internet.defer.html
 
-.. [4] Original discussion
-   https://mail.python.org/pipermail/python-ideas/2012-April/014705.html
-
-.. [5] Issue #14730: Implementation of the PEP 419
-   http://bugs.python.org/issue14730
+[4] Original discussion
+\   https://mail.python.org/pipermail/python-ideas/2012-April/014705.html
 
+[5] Implementation of PEP 419
+\   https://github.com/python/cpython/issues/58935
 
 Copyright
 =========
 
 This document has been placed in the public domain.
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