diff --git a/Gemfile.lock b/Gemfile.lock
index 8c9d418..cce4d0c 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -22,7 +22,7 @@ GEM
     json (2.1.0)
     kramdown (1.16.2)
     libv8 (3.16.14.19)
-    mini_portile2 (2.3.0)
+    mini_portile2 (2.6.1)
     nanoc (4.9.2)
       addressable (~> 2.5)
       cri (~> 2.8)
@@ -34,10 +34,12 @@ GEM
       ref (~> 2.0)
       slow_enumerator_tools (~> 1.0)
       tomlrb (~> 1.2)
-    nokogiri (1.8.2)
-      mini_portile2 (~> 2.3.0)
+    nokogiri (1.12.5)
+      mini_portile2 (~> 2.6.1)
+      racc (~> 1.4)
     parallel (1.12.1)
     public_suffix (3.0.2)
+    racc (1.5.2)
     rainpress (1.0.1)
     rb-fsevent (0.10.3)
     rb-inotify (0.9.10)