What was one cause of the sepoy rebellion in India

One of the main reasons for the revolt was that the British East India Company also started meddling with India's political and financial system.

Essentially, the Sepoy Rebellion was caused by British insensitivity to the growing dismay amongst the Indian Sepoys, or soldiers, being used to enhance British aims of expansionism and colonialism, the Sepoy soldiers developed a sense of resentment about how British companies were gaining wealth at the hands of the slaves or others used to do their work

Government taxes ? i guess