magento 1.7 – How to upload new product images after Adobe Flash Player EOL?

I am wondering how can I upload new product images to my Magento 1 store?
Adobe has blocked all Flash content today and I can’t see upload button now.

However, I am already working on my new Magento 2 store and it’s gonna take few more months meanwhile it’s really important for me to upload new images.

I really appreciate any help. Thanks heaps.