diff --git a/pep-0420.txt b/pep-0420.txt
index 94663b9b8..e58a633fe 100644
--- a/pep-0420.txt
+++ b/pep-0420.txt
@@ -19,7 +19,7 @@ versions, an algorithm to compute the packages ``__path__`` must be
 formulated. With the enhancement proposed here, the import machinery
 itself will construct the list of directories that make up the
 package.  This PEP builds upon the work started in rejected PEPs 382
-and 402.
+and 402. An implementation of this PEP is at [1]_.
 
 Terminology
 ===========
@@ -162,10 +162,10 @@ as a namespace package, whereas in prior Python versions an
 ImportError would be raised.
 
 At PyCon 2012, we had a discussion about namespace packages at which
-PEP 382 and PEP 402 were rejected, to be replaced by this PEP [1]_.
+PEP 382 and PEP 402 were rejected, to be replaced by this PEP [2]_.
 
 Nick Coglan presented a list of his objections to this proposal
-[2]_. They are:
+[3]_. They are:
 
   * Implicit package directories go against the Zen of Python
 
@@ -184,10 +184,12 @@ Nick Coglan presented a list of his objections to this proposal
 References
 ==========
 
-.. [1] PyCon 2012 Namespace Package discussion outcome
+.. [1] PEP 420 branch (http://hg.python.org/features/pep-420)
+
+.. [2] PyCon 2012 Namespace Package discussion outcome
        (http://mail.python.org/pipermail/import-sig/2012-March/000421.html)
 
-.. [2] Nick Coglan's objection to the lack of marker files or directories
+.. [3] Nick Coglan's objection to the lack of marker files or directories
        (http://mail.python.org/pipermail/import-sig/2012-March/000423.html)
 
 Copyright