diff --git a/.travis.yml b/.travis.yml
index 32e27d1..a4e74e8 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -2,12 +2,16 @@ language: php
 
 php:
   - 7.1
+  - 7.2
 
 cache:
   directories:
     - $HOME/.composer/cache/files
     - $HOME/.composer/cache/vcs
 
+before_install:
+  - composer self-update 1.10.21
+
 install:
   - cp $HOME/.phpenv/versions/$(phpenv global)/etc/conf.d/xdebug.ini /tmp # copy xdebug
   - phpenv config-rm xdebug.ini # remove xdebug for faster composer commands
@@ -19,6 +23,3 @@ script:
   - composer build
   - phpenv config-add /tmp/xdebug.ini # reenable xdebug for coverage
   - composer coverage-xml
-
-after_success:
-  - bash <(curl -s https://codecov.io/bash) -f ./test/codeception/_output/coverage.xml
diff --git a/README.md b/README.md
index bdff3ff..d95effd 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,5 @@
 # graphql-php-query-builder
 [![Build Status](https://travis-ci.com/Hearst-Hatchery/graphql-php-query-builder.svg?branch=master)](https://travis-ci.com/Hearst-Hatchery/graphql-php-query-builder)
-[![codecov](https://codecov.io/gh/Hearst-Hatchery/graphql-php-query-builder/branch/master/graph/badge.svg)](https://codecov.io/gh/Hearst-Hatchery/graphql-php-query-builder)
 
 Simple QueryBuilder to deconstruct array and return GraphQL string can be used to request GraphQL server
 
diff --git a/composer.json b/composer.json
index 7a2dd99..c4e8894 100644
--- a/composer.json
+++ b/composer.json
@@ -13,7 +13,9 @@
             "email": "di.tang@hearst.com"
         }
     ],
-    "require": {},
+    "require": {
+        "php": "^7.1"
+    },
     "require-dev": {
         "codeception/verify": "^1.0",
         "codeception/base": "^2.5",