diff --git a/docs/Gemfile.lock b/docs/Gemfile.lock
index 0b3f67b..5e6596c 100644
--- a/docs/Gemfile.lock
+++ b/docs/Gemfile.lock
@@ -51,7 +51,7 @@ GEM
       gemoji (~> 3.0)
       html-pipeline (~> 2.2)
       jekyll (>= 3.0, < 5.0)
-    kramdown (2.2.1)
+    kramdown (2.3.1)
       rexml
     kramdown-parser-gfm (1.1.0)
       kramdown (~> 2.0)