diff --git a/Gemfile.lock b/Gemfile.lock
index ab09278c..410905c6 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -135,7 +135,7 @@ GEM
       thor (>= 0.14, < 2.0)
     jquery-ui-rails (6.0.1)
       railties (>= 3.2.16)
-    json (2.1.0)
+    json (2.3.1)
     kgio (2.11.2)
     launchy (2.4.3)
       addressable (~> 2.3)