diff --git a/Library/Homebrew/Gemfile.lock b/Library/Homebrew/Gemfile.lock
index c3bc243543..55ff345106 100644
--- a/Library/Homebrew/Gemfile.lock
+++ b/Library/Homebrew/Gemfile.lock
@@ -7,7 +7,7 @@ GEM
       minitest (~> 5.1)
       tzinfo (~> 1.1)
     ast (2.4.0)
-    backports (3.12.0)
+    backports (3.13.0)
     concurrent-ruby (1.1.5)
     connection_pool (2.2.2)
     coveralls (0.8.22)