From c89158303f2d5df02c1491e403e1645dd01f20b2 Mon Sep 17 00:00:00 2001
From: Thomas A Caswell <tcaswell@gmail.com>
Date: Wed, 2 Jan 2019 11:02:17 -0500
Subject: [PATCH] Backport PR #13080: Pin pillow to < 5.4 to fix doc build

---
 doc-requirements.txt | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/doc-requirements.txt b/doc-requirements.txt
index 8a21c1e20d10..68d887e4998a 100644
--- a/doc-requirements.txt
+++ b/doc-requirements.txt
@@ -11,5 +11,5 @@ colorspacious
 ipython
 ipywidgets
 numpydoc>=0.8
-pillow>=3.4
+pillow>=3.4,<5.4
 sphinx-gallery>=0.2