So basically pip is kinda a little burden for me. Every time I get back to Replit.com, certain modules I had installed (e.g. pywhatkit and pyqt5) gets missing and I have to reinstall them. More still, pip downgrades from pip-21.1.1 to pip-19.3.1 . This also happens when left inactive for while. However, other modules like pyjokes and Wikipedia is still installed. What is the problem and is it common?