Can't find php-zip extension for php 7.1 on CentOS 7

I am attempting to install Magento 2.2.5 on a new CentOS 7 server with PHP 7.1. I can't seem to find how to install and/or enable the php-zip extension. The issue I'm trying to resolve is this (via composer): > magento/product-community-edition 2.2.5 requires ext-zip * -> the requested PHP extension zip is missing from your system. The repo I'm using (remi-php71) doesn't seem to have the extension, or maybe it's included in another package. I have searched the webtatic repo as well. How can I install and enable the php-zip extension?