diff --git a/Gemfile.lock b/Gemfile.lock
index 632e1c2..4960a1d 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -19,7 +19,7 @@ GEM
     i18n (1.6.0)
       concurrent-ruby (~> 1.0)
     jaro_winkler (1.5.3)
-    json (2.2.0)
+    json (2.3.1)
     minitest (5.11.3)
     parallel (1.17.0)
     parser (2.6.3.0)