diff --git a/Gemfile.lock b/Gemfile.lock
index 2759ff5..e39672b 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -7,7 +7,7 @@ GEM
     haml (3.0.16)
     happymapper (0.3.2)
       libxml-ruby (~> 1.1.3)
-    json (1.4.6)
+    json (1.5.5)
     libxml-ruby (1.1.4)
     mime-types (1.16)
     mustache (0.11.2)