How do I answer this HR screening question?

In interviews I am usually asked why I am looking for a new gig. My answer is “i have been working in the same industry for a while and I want to use my skills to benefit a new industry and learn from it at the same time”

I am a IT proessional that has worked in telecommunications for many years and I would love to move into a new industry. So my answer is honest and true but I guess I could see how it could also make me seem like I am not content.