diff --git a/guix/build-system/python.scm b/guix/build-system/python.scm
index ffed837313..b753940bad 100644
--- a/guix/build-system/python.scm
+++ b/guix/build-system/python.scm
@@ -50,7 +50,7 @@
   "Return a URI string for the Python package hosted on the Python Package
 Index (PyPI) corresponding to NAME and VERSION.  EXTENSION is the file name
 extension, such as '.tar.gz'."
-  (string-append "https://pypi.io/packages/source/"
+  (string-append "https://pypi.org/packages/source/"
                  (string-take name 1) "/" name "/"
                  name "-" version extension))
 
diff --git a/guix/import/pypi.scm b/guix/import/pypi.scm
index 87b047bdac..3a20fc4b9b 100644
--- a/guix/import/pypi.scm
+++ b/guix/import/pypi.scm
@@ -330,7 +330,7 @@ VERSION, SOURCE-URL, HOME-PAGE, SYNOPSIS, DESCRIPTION, and LICENSE."
   (define (pypi-url? url)
     (or (string-prefix? "https://pypi.org/" url)
         (string-prefix? "https://pypi.python.org/" url)
-        (string-prefix? "https://pypi.io/packages" url)))
+        (string-prefix? "https://pypi.org/packages" url)))
 
   (let ((source-url (and=> (package-source package) origin-uri))
         (fetch-method (and=> (package-source package) origin-method)))
diff --git a/tests/pypi.scm b/tests/pypi.scm
index 616ec191f5..6daa44a6e7 100644
--- a/tests/pypi.scm
+++ b/tests/pypi.scm
@@ -81,7 +81,7 @@ baz > 13.37")
    (dummy-package "foo"
                   (source (dummy-origin
                            (uri
-                            "https://pypi.io/packages/source/p/psutil/psutil-4.3.0.tar.gz"))))))
+                            "https://pypi.org/packages/source/p/psutil/psutil-4.3.0.tar.gz"))))))
 
 (test-equal "guix-package->pypi-name, new URL style"
   "certbot"