diff --git a/Library/Homebrew/sorbet/rbi/gems/mechanize@2.8.4.rbi b/Library/Homebrew/sorbet/rbi/gems/mechanize@2.8.5.rbi
similarity index 99%
rename from Library/Homebrew/sorbet/rbi/gems/mechanize@2.8.4.rbi
rename to Library/Homebrew/sorbet/rbi/gems/mechanize@2.8.5.rbi
index e016ff23a5..fd2e6eff7a 100644
--- a/Library/Homebrew/sorbet/rbi/gems/mechanize@2.8.4.rbi
+++ b/Library/Homebrew/sorbet/rbi/gems/mechanize@2.8.5.rbi
@@ -689,6 +689,7 @@ class Mechanize::HTTP::Agent
   def webrobots; end
 end
 
+Mechanize::HTTP::Agent::COOKIE_HEADERS = T.let(T.unsafe(nil), Array)
 Mechanize::HTTP::Agent::CREDENTIAL_HEADERS = T.let(T.unsafe(nil), Array)
 Mechanize::HTTP::Agent::POST_HEADERS = T.let(T.unsafe(nil), Array)
 Mechanize::HTTP::Agent::RobotsKey = T.let(T.unsafe(nil), Symbol)