diff --git a/play-with-docker/Portus/Gemfile.lock b/play-with-docker/Portus/Gemfile.lock
index c1235180e..59381d7ec 100644
--- a/play-with-docker/Portus/Gemfile.lock
+++ b/play-with-docker/Portus/Gemfile.lock
@@ -383,7 +383,7 @@ GEM
     wirble (0.1.3)
     xpath (2.1.0)
       nokogiri (~> 1.3)
-    yajl-ruby (1.3.0)
+    yajl-ruby (1.4.2)
 
 PLATFORMS
   ruby