diff --git a/builder/Gemfile.lock b/builder/Gemfile.lock
index f91a3b7a4ad..7c175409d87 100644
--- a/builder/Gemfile.lock
+++ b/builder/Gemfile.lock
@@ -181,7 +181,7 @@ GEM
     pp (0.6.2)
       prettyprint
     prettyprint (0.2.0)
-    psych (5.2.5)
+    psych (5.2.6)
       date
       stringio
     public_suffix (6.0.2)