diff --git a/CONTRIBUTING.rst b/CONTRIBUTING.rst
index 7348609..236708c 100644
--- a/CONTRIBUTING.rst
+++ b/CONTRIBUTING.rst
@@ -52,4 +52,4 @@ And combine both options::
     $ COUNTRY=us tox -e py35-django-AB
 
 __ https://github.com/django/django-formtools/issues
-__ http://tox.readthedocs.org/en/latest/install.html
+__ https://tox.readthedocs.io/en/latest/install.html
diff --git a/README.rst b/README.rst
index ccb478d..287e251 100644
--- a/README.rst
+++ b/README.rst
@@ -16,7 +16,7 @@ This code used to live in Django proper -- in ``django.contrib.formtools``
 framework's core clean.
 
 For a full list of available formtools, see
-http://django-formtools.readthedocs.org/
+https://django-formtools.readthedocs.io/
 
 django-formtools can also be found on and installed from the Python
 Package Index: https://pypi.python.org/pypi/django-formtools
diff --git a/setup.py b/setup.py
index 89c3a63..f644a32 100644
--- a/setup.py
+++ b/setup.py
@@ -112,7 +112,7 @@ def find_package_data(where='.', package='',
 setup(
     name="django-formtools",
     version=find_version("formtools", "__init__.py"),
-    url='http://django-formtools.readthedocs.org/en/latest/',
+    url='https://django-formtools.readthedocs.io/en/latest/',
     license='BSD',
     description="A set of high-level abstractions for Django forms",
     long_description=read('README.rst'),