diff --git a/docs/conf.py b/docs/conf.py
index 28682502..ab2b8178 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -83,7 +83,7 @@
 # The theme to use for HTML and HTML Help pages.  See the documentation for
 # a list of builtin themes.
 #
-html_theme = 'classic'
+html_theme = 'sphinx_rtd_theme'
 
 # Theme options are theme-specific and customize the look and feel of a
 # theme further.  For a list of options available for each theme, see the