diff --git a/Gemfile.lock b/Gemfile.lock
index cd8ef00..7823793 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -37,7 +37,7 @@ GEM
       jekyll (>= 3.8, < 5.0)
     jekyll-watch (2.2.1)
       listen (~> 3.0)
-    kramdown (2.3.0)
+    kramdown (2.3.1)
       rexml
     kramdown-parser-gfm (1.1.0)
       kramdown (~> 2.0)
@@ -67,6 +67,7 @@ GEM
 
 PLATFORMS
   arm64-darwin-20
+  ruby
 
 DEPENDENCIES
   jekyll (~> 4.2.0)