diff --git a/doc/glossary/index.rst b/doc/glossary/index.rst
index 6a20dd9a8cf1..95b5d63de142 100644
--- a/doc/glossary/index.rst
+++ b/doc/glossary/index.rst
@@ -16,7 +16,7 @@ Glossary
 
 
   dateutil
-      The `dateutil <http://labix.org/python-dateutil>`_ library
+      The `dateutil <https://dateutil.readthedocs.org>`_ library
       provides extensions to the standard datetime module
 
   EPS
diff --git a/lib/matplotlib/dates.py b/lib/matplotlib/dates.py
index 338bfb641b93..7c71ed2b3faa 100755
--- a/lib/matplotlib/dates.py
+++ b/lib/matplotlib/dates.py
@@ -40,7 +40,7 @@
 locators you create.  See `pytz <http://pythonhosted.org/pytz/>`_ for
 information on :mod:`pytz` and timezone handling.
 
-The `dateutil module <http://labix.org/python-dateutil>`_ provides
+The `dateutil module <https://dateutil.readthedocs.org>`_ provides
 additional code to handle date ticking, making it easy to place ticks
 on any kinds of dates.  See examples below.
 
@@ -88,7 +88,7 @@
       :class:`matplotlib.dates.rrulewrapper`.  The
       :class:`rrulewrapper` is a simple wrapper around a
       :class:`dateutil.rrule` (`dateutil
-      <http://labix.org/python-dateutil>`_) which allow almost
+      <https://dateutil.readthedocs.org>`_) which allow almost
       arbitrary date tick specifications.  See `rrule example
       <../examples/pylab_examples/date_demo_rrule.html>`_.