From 4dbdd6f326c6e0a26584136a0d90f316f3dca31f Mon Sep 17 00:00:00 2001
From: Jinzhe Zeng <jzzeng@stu.ecnu.edu.cn>
Date: Sun, 3 Feb 2019 22:26:43 +0800
Subject: [PATCH] fix: pip cache

---
 .travis.yml | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/.travis.yml b/.travis.yml
index 4ca649a9c..408260624 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -13,6 +13,7 @@ env:
   matrix:
     - PYTHON_VERSION=3.7
     - PYTHON_VERSION=3.6
+cache: pip
 
 services:
   - xvfb
@@ -22,4 +23,4 @@ install:
   - source ci-helpers/travis/setup_conda.sh
 
 script:
-  - tox
\ No newline at end of file
+  - tox