diff --git a/manual/extensions.md b/manual/extensions.md
index f5557f6e90e..8fb5c4b7cf1 100644
--- a/manual/extensions.md
+++ b/manual/extensions.md
@@ -32,10 +32,8 @@ See [development](development.md).
 
 #### Known Custom Cops
 
-* [rubocop-rspec](https://github.com/nevir/rubocop-rspec) -
+* [rubocop-rspec](https://github.com/rubocop-hq/rubocop-rspec) -
   RSpec-specific analysis
-* [rubocop-cask](https://github.com/caskroom/rubocop-cask) - Analysis
-  for Homebrew-Cask files.
 * [rubocop-thread_safety](https://github.com/covermymeds/rubocop-thread_safety) -
   Thread-safety analysis
 * [rubocop-require_tools](https://github.com/milch/rubocop-require_tools) -