From 97eb2a7d77011605e8fc49e754cd371ead4366bc Mon Sep 17 00:00:00 2001
From: Brett Cannon <brettcannon@users.noreply.github.com>
Date: Tue, 16 May 2017 14:41:00 -0700
Subject: [PATCH] [2.7] bpo-30380: Pin the version of Sphinx used to build the
 docs (GH-1612) (GH-1619)

---
 .travis.yml | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/.travis.yml b/.travis.yml
index 16fd025109..0bc552a621 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -28,7 +28,9 @@ matrix:
         - TESTING=docs
       before_script:
         - cd Doc
-        - pip install -U Sphinx
+        # Sphinx is pinned so that new versions that introduce new warnings won't suddenly cause build failures.
+        # (Updating the version is fine as long as no warnings are raised by doing so.)
+        - python -m pip install sphinx~=1.5.6
       script:
         - make check suspicious html SPHINXOPTS="-q -W"
 
-- 
2.50.1