diff --git a/Gemfile.lock b/Gemfile.lock
index 86328d8..2dfd762 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -33,7 +33,7 @@ GEM
       mime-types (~> 3.0)
       multi_xml (>= 0.5.2)
     jaro_winkler (1.5.4)
-    json (2.2.0)
+    json (2.3.1)
     method_source (0.9.2)
     mime-types (3.3)
       mime-types-data (~> 3.2015)