doc update
diff --git a/documentation/index.rst b/documentation/index.rst
index a5eb155..10bf305 100644
--- a/documentation/index.rst
+++ b/documentation/index.rst
@@ -13,7 +13,7 @@
- `project page on GitHub`_
- `Download Page`_ with releases
-- This page, when viewed online is at https://pyserial.readthedocs.org/en/latest/ or
+- This page, when viewed online is at https://pyserial.readthedocs.io/en/latest/ or
http://pythonhosted.org/pyserial/ .
.. _Python: http://python.org/
diff --git a/documentation/pyserial.rst b/documentation/pyserial.rst
index 87bc437..b3f035a 100644
--- a/documentation/pyserial.rst
+++ b/documentation/pyserial.rst
@@ -19,7 +19,7 @@
- `project page on GitHub`_
- `Download Page`_ with releases (PyPi)
-- This page, when viewed online is at https://pyserial.readthedocs.org/en/latest/ or
+- This page, when viewed online is at https://pyserial.readthedocs.io/en/latest/ or
http://pythonhosted.org/pyserial/ .
.. _Python: http://python.org/