diff --git a/Library/Homebrew/extend/os/mac/hardware/cpu.rb b/Library/Homebrew/extend/os/mac/hardware/cpu.rb
index 64f10ec65c..b8ec01ac13 100644
--- a/Library/Homebrew/extend/os/mac/hardware/cpu.rb
+++ b/Library/Homebrew/extend/os/mac/hardware/cpu.rb
@@ -107,6 +107,8 @@ module Hardware
           :arm_lightning_thunder
         when 0x573b5eec, 0x1b588bb3 # ARMv8.4-A (Firestorm, Icestorm)
           :arm_firestorm_icestorm
+        when 0xda33d83d             # ARMv8.4-A (Blizzard, Avalanche)
+          :arm_blizzard_avalanche
         else
           :dunno
         end
@@ -138,6 +140,8 @@ module Hardware
           :kabylake
         when 0x38435547 # Ice Lake
           :icelake
+        when 0x1cf8a03e # Comet Lake
+          :cometlake
         else
           :dunno
         end