diff --git a/setup.py b/setup.py
index bd14b21..e29fd96 100755
--- a/setup.py
+++ b/setup.py
@@ -25,7 +25,7 @@
       author_email='sybren@stuvel.eu',
       maintainer='Sybren A. Stuvel',
       maintainer_email='sybren@stuvel.eu',
-      url='http://stuvel.eu/rsa',
+      url='https://stuvel.eu/rsa',
       packages=['rsa'],
       license='ASL 2',
       classifiers=[