diff --git a/Gemfile.lock b/Gemfile.lock
index 79a6e4b..98cd452 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -53,7 +53,7 @@ GEM
     jquery-rails (2.1.4)
       railties (>= 3.0, < 5.0)
       thor (>= 0.14, < 2.0)
-    json (1.7.5)
+    json (1.8.6)
     mail (2.4.4)
       i18n (>= 0.4.0)
       mime-types (~> 1.16)