The existence of Islamic boarding schools has been recognised as the oldest form of Islamic education in Indonesia. The global era has prompted Islamic boarding schools to undergo transformation in several aspects, including the curriculum. This research aims to describe how Islamic boarding schools transform their curriculum to develop students' competencies in the global era while maintaining the local traditions that have long been applied in Islamic boarding school learning. The research method used is descriptive qualitative with a case study approach. The research location was chosen at the Darul Musthofa Assunniyyah Lumajang Islamic boarding school. The findings show that the curriculum transformation at the Darul Musthofa Assunniyyah Lumajang Islamic boarding school has opened itself up to the formal education system, where there are junior high schools and high schools as found in other modern Islamic boarding schools. Curriculum transformation has also been implemented in the learning process at the pesantren with a tiered system, namely awaliyah (basic level), Ibtida' (intermediate level), and samawi (advanced level). Level achievement targets have also been applied to the learning process. The development of students' competencies is not only carried out through learning activities at each level, but also in habitual activities using a classical model that maintains the learning culture practised by the boarding school's supervisors. The challenge of curriculum transformation experienced by the Darul Musthofa Assunniyyah Lumajang boarding school lies in the issue of teaching human resources. Therefore, this This opens up opportunities for further research related to human resource development capacity in pesantren.