diff --git a/examples/axes_grid1/parasite_simple2.py b/examples/axes_grid1/parasite_simple2.py
index 643a722cd7a1..1ab516f0156d 100644
--- a/examples/axes_grid1/parasite_simple2.py
+++ b/examples/axes_grid1/parasite_simple2.py
@@ -30,7 +30,7 @@
 
 ax_kms.axis["bottom"].set_label("Linear velocity at 2.3 kpc [km/s]")
 ax_kms.axis["left"].set_label("FWHM [km/s]")
-ax_pm.axis["top"].set_label("Proper Motion [$^{''}$/yr]")
+ax_pm.axis["top"].set_label(r"Proper Motion [$''$/yr]")
 ax_pm.axis["top"].label.set_visible(True)
 ax_pm.axis["right"].major_ticklabels.set_visible(False)
 
diff --git a/lib/matplotlib/_cm.py b/lib/matplotlib/_cm.py
index 7624b8a88bab..fbc3dd9d8131 100644
--- a/lib/matplotlib/_cm.py
+++ b/lib/matplotlib/_cm.py
@@ -1751,7 +1751,7 @@ def gfunc32(x):
 
 # This bipolar color map was generated from CoolWarmFloat33.csv of
 # "Diverging Color Maps for Scientific Visualization" by Kenneth Moreland.
-# <http://www.cs.unm.edu/~kmorel/documents/ColorMaps/>
+# <http://www.kennethmoreland.com/color-maps/>
 _coolwarm_data = {
     'red': [
         (0.0, 0.2298057, 0.2298057),
diff --git a/lib/matplotlib/pyplot.py b/lib/matplotlib/pyplot.py
index 5aedc396e9c2..23feaf7f57be 100644
--- a/lib/matplotlib/pyplot.py
+++ b/lib/matplotlib/pyplot.py
@@ -2058,8 +2058,7 @@ def colormaps():
       <http://www.ncl.ucar.edu/Document/Graphics/color_table_gallery.shtml>`_
 
     .. [#] See `Diverging Color Maps for Scientific Visualization
-      <http://www.cs.unm.edu/~kmorel/documents/ColorMaps/>`_ by Kenneth
-      Moreland.
+      <http://www.kennethmoreland.com/color-maps/>`_ by Kenneth Moreland.
 
     .. [#] See `A Color Map for Effective Black-and-White Rendering of
       Color-Scale Images