diff --git a/Gemfile.lock b/Gemfile.lock
index 195dd05..1c3d996 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -84,7 +84,7 @@ GEM
       rack (>= 1.0.0)
       url_mount (~> 0.2.1)
     i18n (0.5.0)
-    json (1.6.4)
+    json (2.5.1)
     load_path_find (0.0.6)
       callsite (>= 0.0.2)
     mail (2.3.0)