diff --git a/Gemfile.lock b/Gemfile.lock
index 1e8b6e2..6a8c7e0 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -94,16 +94,18 @@ GEM
     mime-types (3.0)
       mime-types-data (~> 3.2015)
     mime-types-data (3.2015.1120)
-    mini_portile2 (2.0.0)
+    mini_portile2 (2.5.0)
     minitest (5.8.4)
-    nokogiri (1.6.7.2)
-      mini_portile2 (~> 2.0.0.rc2)
+    nokogiri (1.11.1)
+      mini_portile2 (~> 2.5.0)
+      racc (~> 1.4)
     padrino-helpers (0.13.1)
       i18n (~> 0.6, >= 0.6.7)
       padrino-support (= 0.13.1)
       tilt (~> 1.4.1)
     padrino-support (0.13.1)
       activesupport (>= 3.1)
+    racc (1.5.2)
     rack (1.6.4)
     rack-livereload (0.3.16)
       rack