The authors of "A Physics-Based Vibrotactile Feedback Library for Collision Events" which appeared in the July-September 2017 issue of this journal [ibid., vol. 10, no. 3, pp. 325-337, Jul.-Sep. 2017] would like to update their Acknowledgments section to say: The authors thank Jong-Rak Park for his discussion on the physics of multi-body collision and vibration. This work was supported by an MSIP/IITP grant (No. 16ZC1300), an IITP grant (No. 2017-0-00179), and an NRF grant (No. NRF-2017R1A2B4008144), all funded by the Korean government. Seungmoon Choi is the corresponding author.