diff --git a/Gemfile.lock b/Gemfile.lock
index d02572b..aafd0c9 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -21,7 +21,7 @@ GEM
       rubocop (>= 0.47.0)
       sysexits (~> 1.1)
     i18n (0.8.1)
-    json (2.0.3)
+    json (2.3.1)
     minitest (5.10.1)
     parser (2.4.0.0)
       ast (~> 2.2)