diff --git a/Gemfile.lock b/Gemfile.lock
index e237848..35a80f2 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -163,7 +163,7 @@ GEM
       gemoji (~> 3.0)
       html-pipeline (~> 2.2)
       jekyll (>= 3.0)
-    json (2.1.0)
+    json (2.5.1)
     kramdown (1.13.2)
     liquid (3.0.6)
     listen (3.0.6)