diff --git a/hephaestus/Gemfile.lock b/hephaestus/Gemfile.lock
index b363f873..6e5e2efb 100644
--- a/hephaestus/Gemfile.lock
+++ b/hephaestus/Gemfile.lock
@@ -122,7 +122,7 @@ GEM
     tzinfo (0.3.38)
     vegas (0.1.11)
       rack (>= 1.0.0)
-    yajl-ruby (1.1.0)
+    yajl-ruby (1.4.1)
 
 PLATFORMS
   ruby