diff --git a/Gemfile.lock b/Gemfile.lock
index 8fb3be5..d1af92d 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -109,7 +109,7 @@ GEM
       typhoeus (~> 1.0, >= 1.0.1)
     jbuilder (2.10.0)
       activesupport (>= 5.0.0)
-    json (2.1.0)
+    json (2.3.1)
     listen (3.1.5)
       rb-fsevent (~> 0.9, >= 0.9.4)
       rb-inotify (~> 0.9, >= 0.9.7)