Despite revolution's recent return to the world stage, the progress of revolutionary theory has markedly stalled. While some have argued that recent work on the 2011 Arab Spring constitutes a new, misguided 'fifth generation' of theory, I show this claim to be misplaced, demonstrating the remarkable continuity between foundational fourth-generation scholarship and present-day analyses.Furthermore, I critically analyse the theoretical, methodological and professional obstacles which fourth-generation theory has encountered, concluding that scholars must move beyond the fourth generation if we are to surmount them. Finally, I consider the theoretical, methodological and ethical prospects of a true fifth generation of revolutionary theory. ***** It would be hard to call oneself a revolutionary theorist without acknowledging the importance of overturning old paradigms. It is in this regard that Jaime Allinson (2019) most certainly carried forward some revolutionary energy in his recent endeavour to prove that a fifth generation of revolutionary theory has come and passed. † In his article for the Journal of Historical Sociology, Allinson engages with three books which he claims belong to a new generation of theory: Asef Bayat's, (2017) Revolution without Revolutionaries; Donatella Della Porta's (2016) Where did the Revolution Go?; and Daniel Ritter's (2015) The Iron Cage of Liberalism. He uses these books as core evidentiary markers for his proposed new generation, and deploys a series of insightful critiques to build a case for rejecting it altogether.In what follows, I advance an alternative hypothesis, contending that our problems instead lie with an overly-long fourth generation of theory, from which the field has so-far failed to evolve. I show Allinson's central claim to be ultimately misplaced, and that his critiques more readily apply to the tail-end of fourth-generation revolutionary theory. I then move to consider why this generation of revolutionary theory has encountered so much trouble since its inception in the early 1990s (Foran, 1993), and argue that we are currently experiencing its death throes. Finally, in light of the anticipated downturn of the fourth generation of revolutionary theory, I offer some ambitions and speculative suggestions for a true fifth generation of revolutionary theory, one that is yet to come. suite of fleeting revolutionaries who neither knew who their 'leaders' were, nor, in fact, whether they had any?Many of today's revolutions neither resemble the classical revolutions of the past, nor those of the non-violent post-Soviet wave. They are, as Allinson, (2019:148) rightly notes, often "restricted to the momentary," easily crushed, and particularly vulnerable to counter-revolution. This, in many ways, is their identifying feature: while the past generation of revolutions were characterised by their non-violence, newer revolutions have been characterised by their fragility (we could even collectively call them the 'fragile revolutions'). Some scholars have even deemed them so ...