diff --git a/Library/Homebrew/rubocops/uses_from_macos.rb b/Library/Homebrew/rubocops/uses_from_macos.rb
index 7b3604bf1b..cfd82826bd 100644
--- a/Library/Homebrew/rubocops/uses_from_macos.rb
+++ b/Library/Homebrew/rubocops/uses_from_macos.rb
@@ -21,7 +21,6 @@ module RuboCop
           expat
           file-formula
           flex
-          gcore
           gnu-getopt
           gperf
           icu4c