diff --git a/Gemfile.lock b/Gemfile.lock
index 7d2eff9..4e69728 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -214,7 +214,7 @@ GEM
       gemoji (~> 3.0)
       html-pipeline (~> 2.2)
       jekyll (~> 3.0)
-    json (2.1.0)
+    json (2.5.1)
     kramdown (1.17.0)
     liquid (4.0.0)
     listen (3.1.5)