In the arena of philosophy, practices are always evolving and being updated. Stoicism is no different and through the centuries, the original ideas laid out by Zeno of Citium were adapted and changed by later Stoics like Cleanthes, Chrysippus and Epictetus.
Epictetus in particular is of note for his focus on the dichotomy of control and his teachings in The Enchiridion have influenced countless generations.
A modern Stoic who’s been influenced by Epitectetus is Massimo Pigliucci and in his book The Stoic Guide To A Happy Life: 53 Brief Lessons For Living, Pigliucci reinterprets The Enchiridion for a modern audience and introduces his own take on how Stoicism should be updated.