Here is my situation, I have obtained a MSc in Computer Science with some publications in the field. Actually I would like to follow PhD studies, but the problem is that a lot of them are asking to have a proven track in Machine Learning. I have not followed any course on that topic and the things that I have learned about that field was from books, Coursera, or the Internet. I really like the field, but I regret that I did not follow any course beforehand, even though I know theoretically and practically the basics.

How I can address that in my PhD applications? or should I follow another MSc with specialization in Machine Learning?

Any suggestion?