diff --git a/Library/Homebrew/upgrade.rb b/Library/Homebrew/upgrade.rb
index be3c21463e..b4ce68697a 100644
--- a/Library/Homebrew/upgrade.rb
+++ b/Library/Homebrew/upgrade.rb
@@ -13,7 +13,7 @@ module Homebrew
   module Upgrade
     Dependents = Struct.new(:upgradeable, :pinned, :skipped)
 
-    def self.formulae_installer(
+    def self.formula_installers(
       formulae_to_install,
       flags:,
       dry_run: false,