Upgraded to pro. How do I update the plugin for pro features?

Hello Keshav Bhopla,

Thanks for reaching out to us. You have to make an purchase by choosing a plan from here https://getwooplugins.com/plugins/woocommerce-variation-swatches/

After successfully completed the purchase, you can follow our documentation from here https://getwooplugins.com/documentation/woocommerce-variation-swatches/#installation-premium

Thanks