From c8697f4efbff96f4f734088613f17d088a817791 Mon Sep 17 00:00:00 2001
From: BinHong Lee <binhonglee@users.noreply.github.com>
Date: Sat, 21 Apr 2018 11:17:42 -0700
Subject: [PATCH] Update .travis.yml

---
 .travis.yml | 19 +++++++++++++++++--
 1 file changed, 17 insertions(+), 2 deletions(-)

diff --git a/.travis.yml b/.travis.yml
index 22b341a..2e385e3 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -2,7 +2,7 @@ sudo: required
 language: cpp
 matrix:
   include:
-    # works on Precise and Trusty
+
     - os: linux
       addons:
         apt:
@@ -12,11 +12,26 @@ matrix:
             - g++-6
       env:
         - MATRIX_EVAL="CC=gcc-6 && CXX=g++-6"
+    
+    - os: linux
+      addons:
+        apt:
+          sources:
+            - ubuntu-toolchain-r-test
+          packages:
+            - g++-7
+      env:
+        - MATRIX_EVAL="CC=gcc-7 && CXX=g++-7"
 
     - os: osx
       osx_image: xcode8
       env:
-        - MATRIX_EVAL="brew update && brew upgrade && brew install gcc@6 && CC=gcc-6 && CXX=g++-6"
+        - MATRIX_EVAL="brew install gcc6 && CC=gcc-6 && CXX=g++-6"
+        
+    - os: osx
+      osx_image: xcode8
+      env:
+        - MATRIX_EVAL="brew install gcc && CC=gcc-7 && CXX=g++-7"
 
 before_install:
   - eval "${MATRIX_EVAL}"