diff --git a/docs/source/conf.py b/docs/source/conf.py
index b97ff782d9..db44e34f4d 100644
--- a/docs/source/conf.py
+++ b/docs/source/conf.py
@@ -18,10 +18,7 @@ on_rtd = os.environ.get('READTHEDOCS', None) == 'True'
 
 # On Read the Docs, we need to mock a few third-party modules so we don't get
 # ImportErrors when building documentation
-try:
-    from unittest.mock import MagicMock
-except ImportError:
-    from mock import Mock as MagicMock
+from unittest.mock import MagicMock
 
 
 MOCK_MODULES = ['numpy', 'numpy.polynomial', 'numpy.polynomial.polynomial',
@@ -254,6 +251,6 @@ napoleon_use_ivar = True
 intersphinx_mapping = {
     'python': ('https://docs.python.org/3', None),
     'numpy': ('https://docs.scipy.org/doc/numpy/', None),
-    'pandas': ('http://pandas.pydata.org/pandas-docs/stable/', None),
+    'pandas': ('https://pandas.pydata.org/pandas-docs/stable/', None),
     'matplotlib': ('https://matplotlib.org/', None)
 }