diff --git a/Library/Homebrew/Gemfile.lock b/Library/Homebrew/Gemfile.lock
index c2031b498b..1ebbcfed08 100644
--- a/Library/Homebrew/Gemfile.lock
+++ b/Library/Homebrew/Gemfile.lock
@@ -10,7 +10,7 @@ GEM
     bindata (2.5.0)
     coderay (1.1.3)
     concurrent-ruby (1.3.5)
-    diff-lcs (1.5.1)
+    diff-lcs (1.6.0)
     docile (1.4.1)
     elftools (1.3.1)
       bindata (~> 2)