diff --git a/Library/Homebrew/rubocops/uses_from_macos.rb b/Library/Homebrew/rubocops/uses_from_macos.rb
index 627f6175b4..679547a431 100644
--- a/Library/Homebrew/rubocops/uses_from_macos.rb
+++ b/Library/Homebrew/rubocops/uses_from_macos.rb
@@ -19,6 +19,7 @@ module RuboCop
           krb5
           libedit
           libffi
+          libiconv
           libpcap
           libxml2
           libxslt