diff --git a/Gemfile.lock b/Gemfile.lock
index 14e2579..5e54bdf 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -103,9 +103,6 @@ GEM
       pathutil (~> 0.9)
       rouge (>= 1.7, < 4)
       safe_yaml (~> 1.0)
-    jekyll-asciidoc (3.0.0)
-      asciidoctor (>= 1.5.0)
-      jekyll (>= 3.0.0)
     jekyll-avatar (0.7.0)
       jekyll (>= 3.0, < 5.0)
     jekyll-coffeescript (1.1.1)
@@ -208,15 +205,15 @@ GEM
       rb-fsevent (~> 0.10, >= 0.10.3)
       rb-inotify (~> 0.9, >= 0.9.10)
     mercenary (0.3.6)
-    mini_portile2 (2.5.0)
+    mini_portile2 (2.8.0)
     minima (2.5.1)
       jekyll (>= 3.5, < 5.0)
       jekyll-feed (~> 0.9)
       jekyll-seo-tag (~> 2.1)
     minitest (5.14.3)
     multipart-post (2.1.1)
-    nokogiri (1.11.1)
-      mini_portile2 (~> 2.5.0)
+    nokogiri (1.13.4)
+      mini_portile2 (~> 2.8.0)
       racc (~> 1.4)
     octokit (4.20.0)
       faraday (>= 0.9)
@@ -224,7 +221,7 @@ GEM
     pathutil (0.16.2)
       forwardable-extended (~> 2.6)
     public_suffix (3.1.1)
-    racc (1.5.2)
+    racc (1.6.0)
     rb-fsevent (0.10.4)
     rb-inotify (0.10.1)
       ffi (~> 1.0)
@@ -263,7 +260,6 @@ PLATFORMS
 
 DEPENDENCIES
   github-pages
-  jekyll-asciidoc
   jekyll-seo-tag
   kramdown (>= 2.3.1)