diff --git a/Gemfile.lock b/Gemfile.lock
index 14beb3a..58e0b9a 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -117,7 +117,7 @@ GEM
       gemoji (>= 3, < 5)
       html-pipeline (~> 2.2)
       jekyll (>= 3.0, < 5.0)
-    json (2.15.0)
+    json (2.15.2.1)
     katex (0.10.0)
       execjs (~> 2.8)
     kramdown (2.5.1)