diff --git a/Gemfile.lock b/Gemfile.lock
index 752312f..04f6f1d 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -21,6 +21,7 @@ GEM
       ffi (>= 1.3.0)
     execjs (2.6.0)
     fast-stemmer (1.0.2)
+    ffi (1.9.10)
     ffi (1.9.10-x64-mingw32)
     gemoji (2.1.0)
     github-pages (39)
@@ -93,11 +94,14 @@ GEM
       rb-inotify (>= 0.9)
     maruku (0.7.0)
     mercenary (0.3.5)
-    mini_portile (0.6.2)
+    mini_portile2 (2.8.0)
     minitest (5.8.2)
     net-dns (0.8.0)
-    nokogiri (1.6.6.2-x64-mingw32)
-      mini_portile (~> 0.6.0)
+    nokogiri (1.13.4)
+      mini_portile2 (~> 2.8.0)
+      racc (~> 1.4)
+    nokogiri (1.13.4-x64-mingw32)
+      racc (~> 1.4)
     parslet (1.5.0)
       blankslate (~> 2.0)
     posix-spawn (0.3.11)
@@ -105,6 +109,7 @@ GEM
     pygments.rb (0.6.3)
       posix-spawn (~> 0.3.6)
       yajl-ruby (~> 1.2.0)
+    racc (1.6.0)
     rb-fsevent (0.9.6)
     rb-inotify (0.9.5)
       ffi (>= 0.5.0)
@@ -123,6 +128,7 @@ GEM
     yajl-ruby (1.2.1)
 
 PLATFORMS
+  ruby
   x64-mingw32
 
 DEPENDENCIES