diff --git a/docs/conf.py b/docs/conf.py
index e549827..afdfa64 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -12,8 +12,9 @@
 # All configuration values have a default; values that are commented out
 # serve to show the default.
 
-import sys
 import os
+import sys
+import sphinx
 
 # If extensions (or modules to document with autodoc) are in another directory,
 # add these directories to sys.path here. If the directory is relative to the
@@ -35,10 +36,13 @@ extensions = [
     'sphinx.ext.intersphinx',
     'sphinx.ext.coverage',
     'sphinx.ext.viewcode',
-    'sphinx.ext.napoleon',
 ]
 
-needs_sphinx = '1.3'
+# Read the Docs is version 1.2 as of writing
+if sphinx.version_info[:2] < (1, 3):
+    extensions.append('sphinxcontrib.napoleon')
+else:
+    extensions.append('sphinx.ext.napoleon')
 
 # Add any paths that contain templates here, relative to this directory.
 templates_path = ['_templates']