The Nuclear Regulatory Commission (NRC) is amending its regulations to revise the Holtec International HI-STORM 100 cask system listing within the "List of approved spent fuel storage casks" to include Amendment No. 2 to Certificate of Compliance (CoC) Number 1014. Amendment No. 2 modifies the cask design to include changes to materials used in construction, changes to the types of fuel that can be loaded, changes to shielding and confinement methodologies and assumptions, revisions to various temperature limits, changes in allowable fuel enrichments, and other changes to reflect current NRC staff guidance and use of industry codes, under a general license.