diff --git a/Gemfile.lock b/Gemfile.lock
index b476d3ac..8a603931 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -368,7 +368,7 @@ GEM
       thor (>= 0.14, < 2.0)
     jquery-ui-rails (5.0.5)
       railties (>= 3.2.16)
-    json (2.2.0)
+    json (2.3.1)
     json-ld (3.0.2)
       multi_json (~> 1.12)
       rdf (>= 2.2.8, < 4.0)