diff --git a/Library/Homebrew/test/Gemfile.lock b/Library/Homebrew/test/Gemfile.lock
index ca28192856..ac8a84030e 100644
--- a/Library/Homebrew/test/Gemfile.lock
+++ b/Library/Homebrew/test/Gemfile.lock
@@ -11,7 +11,7 @@ GEM
     hpricot (0.8.6)
     jaro_winkler (1.5.1)
     json (2.1.0)
-    mustache (1.0.5)
+    mustache (1.1.0)
     parallel (1.12.1)
     parallel_tests (2.23.0)
       parallel