diff --git a/docs/conf.py b/docs/conf.py
index 903be1c9..935b88c2 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -52,3 +52,6 @@
 
 # readthedocs being a pain
 master_doc = 'index'
+
+# ignore 'py:class reference target not found' warning
+nitpick_ignore = [('py:class', 'pd.DataFrame')]