diff --git a/Gemfile.lock b/Gemfile.lock
index 6a030be..d0e5ff2 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -25,7 +25,7 @@ GEM
     haml (4.0.7)
       tilt
     htmlentities (4.3.4)
-    json (2.0.2)
+    json (2.3.1)
     mime-types (3.1)
       mime-types-data (~> 3.2015)
     mime-types-data (3.2016.0521)