diff --git a/Gemfile.lock b/Gemfile.lock
index c39a86e..54b8a98 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -121,7 +121,7 @@ GEM
       thor (>= 0.14, < 2.0)
     jquery-ui-rails (6.0.1)
       railties (>= 3.2.16)
-    json (2.2.0)
+    json (2.3.1)
     libv8 (6.7.288.46.1)
     loofah (2.2.3)
       crass (~> 1.0.2)