diff --git a/Library/Homebrew/os/mac.rb b/Library/Homebrew/os/mac.rb
index c017622bc8..29fa508f3f 100644
--- a/Library/Homebrew/os/mac.rb
+++ b/Library/Homebrew/os/mac.rb
@@ -55,7 +55,7 @@ module OS
     def self.latest_sdk_version
       # TODO: bump version when new Xcode macOS SDK is released
       # NOTE: We only track the major version of the SDK.
-      ::Version.new("13")
+      ::Version.new("15")
     end
 
     sig { returns(String) }