diff --git a/pep-3104.txt b/pep-3104.txt
index 8abcd4c038e..298ef0df479 100644
--- a/pep-3104.txt
+++ b/pep-3104.txt
@@ -440,7 +440,7 @@ References
 ==========
 
 .. [1] Scoping (was Re: Lambda binding solved?) (Rafael Bracho)
-   http://www.python.org/search/hypermail/python-1994q1/0301.html
+   https://legacy.python.org/search/hypermail/python-1994q1/0301.html
 
 .. [2] Extended Function syntax (Just van Rossum)
    https://mail.python.org/pipermail/python-dev/2003-February/032764.html