diff --git a/Library/Homebrew/os.rb b/Library/Homebrew/os.rb
index 3152c91389..52945a402a 100644
--- a/Library/Homebrew/os.rb
+++ b/Library/Homebrew/os.rb
@@ -1,8 +1,6 @@
 # typed: true
 # frozen_string_literal: true
 
-require "version"
-
 # Helper functions for querying operating system information.
 #
 # @api private
diff --git a/Library/Homebrew/os/linux.rb b/Library/Homebrew/os/linux.rb
index c8fcc00e52..277e3de3a9 100644
--- a/Library/Homebrew/os/linux.rb
+++ b/Library/Homebrew/os/linux.rb
@@ -8,8 +8,6 @@ module OS
 
     module_function
 
-    ::MacOS = OS::Mac
-
     sig { returns(String) }
     def os_version
       if which("lsb_release")
@@ -33,6 +31,8 @@ module OS
   module Mac
     module_function
 
+    ::MacOS = OS::Mac
+
     raise "Loaded OS::Linux on generic OS!" if ENV["HOMEBREW_TEST_GENERIC_OS"]
 
     def version
diff --git a/Library/Homebrew/os/mac/version.rb b/Library/Homebrew/os/mac/version.rb
index a460141c50..5f86f697a2 100644
--- a/Library/Homebrew/os/mac/version.rb
+++ b/Library/Homebrew/os/mac/version.rb
@@ -16,7 +16,7 @@ module OS
       # TODO: bump version when new macOS is released or announced
       # and also update references in docs/Installation.md,
       # https://github.com/Homebrew/install/blob/HEAD/install.sh and
-      # OS::Mac::Version (in HOMEBREW_LIBRARY/os.rb)
+      # MacOSVersions::SYMBOLS
       NEWEST_UNSUPPORTED = "13"
       private_constant :NEWEST_UNSUPPORTED