diff --git a/Gemfile.lock b/Gemfile.lock
index 2d0676a..c390f5d 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -152,7 +152,7 @@ GEM
       thor (>= 0.14, < 2.0)
     jquery-ui-rails (6.0.1)
       railties (>= 3.2.16)
-    json (2.2.0)
+    json (2.3.1)
     jwt (2.2.1)
     listen (3.0.8)
       rb-fsevent (~> 0.9, >= 0.9.4)