diff --git a/Library/Homebrew/test/Gemfile.lock b/Library/Homebrew/test/Gemfile.lock
index 862f3a45b7..2e78f050b1 100644
--- a/Library/Homebrew/test/Gemfile.lock
+++ b/Library/Homebrew/test/Gemfile.lock
@@ -35,11 +35,10 @@ PLATFORMS
 
 DEPENDENCIES
   coveralls (= 0.8.14)
-  json (~> 1.8)
   minitest (~> 5.3)
   mocha (~> 1.1)
   rake (~> 10.3)
   simplecov (= 0.12.0)!
 
 BUNDLED WITH
-   1.11.2
+   1.12.5