diff --git a/Gemfile.lock b/Gemfile.lock
index 8fb39a8..4123b69 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -43,7 +43,7 @@ GEM
       concurrent-ruby (~> 1.0)
     iniparse (1.4.4)
     jaro_winkler (1.5.3)
-    json (2.2.0)
+    json (2.3.1)
     kramdown (1.17.0)
     mini_portile2 (2.4.0)
     minitest (5.11.3)