diff --git a/docs/Gemfile.lock b/docs/Gemfile.lock
index 43746f0..c115f3a 100644
--- a/docs/Gemfile.lock
+++ b/docs/Gemfile.lock
@@ -213,7 +213,7 @@ GEM
       gemoji (>= 3, < 5)
       html-pipeline (~> 2.2)
       jekyll (>= 3.0, < 5.0)
-    json (2.20.0)
+    json (2.21.2)
     kramdown (2.4.0)
       rexml
     kramdown-parser-gfm (1.1.0)