diff --git a/Library/Homebrew/utils/user.rb b/Library/Homebrew/utils/user.rb
index 09be3d7707..72339509f6 100644
--- a/Library/Homebrew/utils/user.rb
+++ b/Library/Homebrew/utils/user.rb
@@ -1,4 +1,4 @@
-# typed: true
+# typed: strict
 # frozen_string_literal: true
 
 require "delegate"
@@ -29,6 +29,6 @@ class User < SimpleDelegator
     pwuid = Etc.getpwuid(Process.euid)
     return if pwuid.nil?
 
-    @current = new(pwuid.name)
+    @current = T.let(new(pwuid.name), T.nilable(T.attached_class))
   end
 end