diff --git a/Gemfile.lock b/Gemfile.lock
index 9689e73..ab1a0cd 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -89,7 +89,7 @@ GEM
     jaro_winkler (1.5.2)
     jbuilder (2.9.1)
       activesupport (>= 4.2.0)
-    json (2.1.0)
+    json (2.5.1)
     listen (3.1.5)
       rb-fsevent (~> 0.9, >= 0.9.4)
       rb-inotify (~> 0.9, >= 0.9.7)