diff --git a/Gemfile.lock b/Gemfile.lock
index a889593..01d9c66 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -126,11 +126,12 @@ GEM
     middleman-syntax (3.0.0)
       middleman-core (>= 3.2)
       rouge (~> 2.0)
-    mini_portile2 (2.3.0)
+    mini_portile2 (2.6.1)
     minitest (5.11.3)
     multi_json (1.13.1)
-    nokogiri (1.8.4)
-      mini_portile2 (~> 2.3.0)
+    nokogiri (1.12.2)
+      mini_portile2 (~> 2.6.1)
+      racc (~> 1.4)
     padrino-helpers (0.13.3.4)
       i18n (~> 0.6, >= 0.6.7)
       padrino-support (= 0.13.3.4)
@@ -139,6 +140,7 @@ GEM
       activesupport (>= 3.1)
     parallel (1.12.1)
     public_suffix (3.0.2)
+    racc (1.5.2)
     rack (2.0.5)
     rack-livereload (0.3.17)
       rack