From 9b3bebfcd77a57c7698d1a26d88acde883cec0a8 Mon Sep 17 00:00:00 2001
From: Adrian Sampson <adrian@radbox.org>
Date: Sat, 30 Mar 2019 12:48:34 -0400
Subject: [PATCH] Travis: fix shell syntax for version specifier

---
 .travis.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.travis.yml b/.travis.yml
index f15f3cefb..492b90575 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -52,7 +52,7 @@ addons:
 # To install dependencies, tell tox to do everything but actually running the
 # test.
 install:
-    - travis_retry pip install tox<=3.8.1 sphinx
+    - travis_retry pip install 'tox<=3.8.1' sphinx
     # upgrade requests to satisfy sphinx linkcheck (for building man pages)
     - if [[ $TRAVIS_PYTHON_VERSION == *_site_packages ]]; then pip install -U requests; fi
     - travis_retry tox -e $TOX_ENV --notest