diff --git a/Gemfile.lock b/Gemfile.lock
index 0cd8918..c896697 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -207,7 +207,7 @@ GEM
       jekyll-seo-tag (~> 2.1)
     minitest (5.14.0)
     multipart-post (2.1.1)
-    nokogiri (1.10.7)
+    nokogiri (1.10.8)
       mini_portile2 (~> 2.4.0)
     octicons (9.3.1)
       nokogiri (>= 1.6.3.1)
@@ -253,6 +253,7 @@ DEPENDENCIES
   faraday (< 1.0)
   github-pages
   jekyll-feed (~> 0.12)
+  jekyll-github-metadata
   jekyll-octicons
   minima (~> 2.5)
   tzinfo (~> 1.2)