diff --git a/README.md b/README.md
index 1ee3f64..fb3f2ad 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,5 @@
 # Twilio Application Component for Yii2
 
-[![Latest Version](https://img.shields.io/github/release/2amigos/yii2-twilio-component.svg?style=flat-square)](https://github.com/2amigos/yii2-twilio-component/releases)
 [![Software License](https://img.shields.io/badge/license-MIT-brightgreen.svg?style=flat-square)](LICENSE.md)
 [![Total Downloads](https://poser.pugx.org/2amigos/yii2-twilio-component/downloads)](https://packagist.org/packages/2amigos/yii2-twilio-component)
 
diff --git a/composer.json b/composer.json
index 2d0c3e9..0f65c77 100644
--- a/composer.json
+++ b/composer.json
@@ -34,9 +34,9 @@
     "minimum-stability": "dev",
     "prefer-stable": true,
     "require": {
-        "php": ">=7",
+        "php": ">=7.1",
         "yiisoft/yii2": "~2.0.11",
-        "twilio/sdk": "^5.15"
+        "twilio/sdk": "^6.43.0"
     },
     "require-dev": {
         "friendsofphp/php-cs-fixer": "^2.3"
diff --git a/src/TwilioComponent.php b/src/TwilioComponent.php
index 75f4297..e060789 100644
--- a/src/TwilioComponent.php
+++ b/src/TwilioComponent.php
@@ -111,7 +111,7 @@ public function getClient(): Client
      * @return string
      *
      */
-    protected function parseFrom(string $from): string
+    protected function parseFrom(?string $from): string
     {
         if (null === $from) {
             if (null === $this->phoneNumber) {