diff --git a/Gemfile.lock b/Gemfile.lock
index e540337..ed73ead 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -96,7 +96,7 @@ GEM
     i18n (1.0.1)
       concurrent-ruby (~> 1.0)
     jaro_winkler (1.5.1)
-    json (2.1.0)
+    json (2.3.1)
     jwt (2.2.2)
     listen (3.1.5)
       rb-fsevent (~> 0.9, >= 0.9.4)