diff --git a/Gemfile.lock b/Gemfile.lock
index 83ee17a..d4fcf04 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -34,7 +34,7 @@ GEM
     htmlentities (4.3.4)
     jaro_winkler (1.5.4)
     jmespath (1.4.0)
-    json (2.1.0)
+    json (2.3.1)
     kramdown (1.17.0)
     method_source (0.9.0)
     mini_portile2 (2.4.0)