diff --git a/.travis.yml b/.travis.yml
index 1f5c1fd..ab36450 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -6,6 +6,7 @@ php:
   - 7.1
   - 7.2
   - 7.3
+  - 7.4
 
 before_install:
   - nvm install 8
@@ -25,4 +26,4 @@ script:
   - scripts/test.sh
 
 after_success:
-    - bash <(curl -s https://codecov.io/bash) -t 8436848f-9a99-4b49-be60-629d7ff9a62c
\ No newline at end of file
+    - bash <(curl -s https://codecov.io/bash) -t 76a0abaf-bbc4-4829-b5b8-474f10a6b9e9
diff --git a/README.md b/README.md
index aa1d5f9..c97e944 100644
--- a/README.md
+++ b/README.md
@@ -1,9 +1,9 @@
 # web3.php
 
-[![Build Status](https://travis-ci.org/sc0Vu/web3.php.svg?branch=master)](https://travis-ci.org/sc0Vu/web3.php)
-[![codecov](https://codecov.io/gh/sc0Vu/web3.php/branch/master/graph/badge.svg)](https://codecov.io/gh/sc0Vu/web3.php)
+[![Build Status](https://travis-ci.org/web3p/web3.php.svg?branch=master)](https://travis-ci.org/web3p/web3.php)
+[![codecov](https://codecov.io/gh/web3p/web3.php/branch/master/graph/badge.svg)](https://codecov.io/gh/web3p/web3.php)
 [![Join the chat at https://gitter.im/web3-php/web3.php](https://img.shields.io/badge/gitter-join%20chat-brightgreen.svg)](https://gitter.im/web3-php/web3.php)
-[![Licensed under the MIT License](https://img.shields.io/badge/License-MIT-blue.svg)](https://github.com/sc0Vu/web3.php/blob/master/LICENSE)
+[![Licensed under the MIT License](https://img.shields.io/badge/License-MIT-blue.svg)](https://github.com/web3p/web3.php/blob/master/LICENSE)
 
 
 A php interface for interacting with the Ethereum blockchain and ecosystem.
diff --git a/composer.json b/composer.json
index 69a3463..8676574 100644
--- a/composer.json
+++ b/composer.json
@@ -10,7 +10,7 @@
         }
     ],
     "require": {
-        "guzzlehttp/guzzle": "~6.0",
+        "guzzlehttp/guzzle": "~7.0",
         "PHP": "^7.1",
         "kornrunner/keccak": "~1.0",
         "phpseclib/phpseclib": "~2.0.11",
diff --git a/docker/php/Dockerfile-74 b/docker/php/Dockerfile-74
new file mode 100644
index 0000000..f957a25
--- /dev/null
+++ b/docker/php/Dockerfile-74
@@ -0,0 +1,23 @@
+FROM php:7.4-alpine
+
+MAINTAINER Peter Lai <alk03073135@gmail.com>
+
+COPY composer-setup.php composer-setup.php
+# COPY php.ini-production $PHP_INI_DIR/php.ini
+
+RUN apk update && \
+    apk add git
+
+# Install gmp
+Run apk add gmp-dev && \
+    docker-php-ext-install gmp
+
+# Install nodejs
+# Run apk add --update nodejs nodejs-npm
+
+# Install composer
+RUN php composer-setup.php && \
+    php composer-setup.php --install-dir=/usr/bin --filename=composer && \
+    php -r "unlink('composer-setup.php');"
+
+WORKDIR /app