diff --git a/Gemfile.lock b/Gemfile.lock
index 1e7fe162c..e2d59c70f 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -101,11 +101,12 @@ GEM
     middleman-syntax (3.0.0)
       middleman-core (>= 3.2)
       rouge (~> 2.0)
-    mini_portile2 (2.4.0)
+    mini_portile2 (2.8.0)
     minitest (5.11.3)
     mustache (1.1.0)
-    nokogiri (1.9.1)
-      mini_portile2 (~> 2.4.0)
+    nokogiri (1.13.5)
+      mini_portile2 (~> 2.8.0)
+      racc (~> 1.4)
     padrino-helpers (0.13.3.4)
       i18n (~> 0.6, >= 0.6.7)
       padrino-support (= 0.13.3.4)
@@ -114,6 +115,7 @@ GEM
       activesupport (>= 3.1)
     parallel (1.12.1)
     public_suffix (3.0.3)
+    racc (1.6.0)
     rack (2.0.6)
     rb-fsevent (0.10.3)
     rb-inotify (0.10.0)