diff --git a/Library/Homebrew/rubocops/extend/formula_cop.rb b/Library/Homebrew/rubocops/extend/formula_cop.rb
index 8ef5e9ace3..02bbb7c6d9 100644
--- a/Library/Homebrew/rubocops/extend/formula_cop.rb
+++ b/Library/Homebrew/rubocops/extend/formula_cop.rb
@@ -1,4 +1,12 @@
-require "parser/current"
+# Silence compatibility warning.
+begin
+  old_verbosity = $VERBOSE
+  $VERBOSE = nil
+  require "parser/current"
+ensure
+  $VERBOSE = old_verbosity
+end
+
 require_relative "../../extend/string"
 
 module RuboCop