diff --git a/Library/Homebrew/Gemfile.lock b/Library/Homebrew/Gemfile.lock
index e7e42c144d..6c463eea44 100644
--- a/Library/Homebrew/Gemfile.lock
+++ b/Library/Homebrew/Gemfile.lock
@@ -41,7 +41,7 @@ GEM
       hana (~> 1.3)
       regexp_parser (~> 2.0)
       uri_template (~> 0.7)
-    mechanize (2.8.5)
+    mechanize (2.9.0)
       addressable (~> 2.8)
       domain_name (~> 0.5, >= 0.5.20190701)
       http-cookie (~> 1.0, >= 1.0.3)