Which technology to learn for switching in Testing domain

Guys I was in manual testing from past 4yrs I learnt Selenium+Java and cracked an interview in TCS but when I landed into a project here they are not working on any Selenium at all it's been 2yrs all my Selenium+Java knowledge is gone. I want to again start from scratch. Which technologies you prefer should I learn so that I can get good projects?

Overall experience 6yrs now.

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