diff --git a/Makefile b/Makefile
index bbda07a..9cf458f 100644
--- a/Makefile
+++ b/Makefile
@@ -161,11 +161,11 @@ release: $(PY_SOURCES) $(DOC_SOURCES) $(DEB_SOURCES)
 	git commit debian/changelog -m "Updated changelog for release $(VER)"
 	git tag -s v$(VER) -m "Release v$(VER)"
 	# update the package's registration on PyPI (in case any metadata's changed)
-	$(PYTHON) $(PYFLAGS) setup.py register
+	$(PYTHON) $(PYFLAGS) setup.py register -r https://pypi.python.org/pypi
 
 upload: $(PY_SOURCES) $(DOC_SOURCES) $(DIST_DEB) $(DIST_DSC)
 	# build a source archive and upload to PyPI
-	$(PYTHON) $(PYFLAGS) setup.py sdist upload
+	$(PYTHON) $(PYFLAGS) setup.py sdist upload -r https://pypi.python.org/pypi
 	# build the deb source archive and upload to Raspbian
 	dput raspberrypi dist/$(NAME)_$(VER)$(DEB_SUFFIX)_source.changes
 	dput raspberrypi dist/$(NAME)_$(VER)$(DEB_SUFFIX)_$(DEB_ARCH).changes