diff --git a/Gemfile.lock b/Gemfile.lock
index 77241ae..41bb0e8 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -108,17 +108,19 @@ GEM
       railties (>= 3.0.0, < 5.0.0)
     metaclass (0.0.4)
     mime-types (2.5)
-    mini_portile (0.6.2)
+    mini_portile2 (2.5.1)
     minitest (4.7.5)
     mocha (1.1.0)
       metaclass (~> 0.0.1)
     multi_json (1.11.0)
     multi_test (0.1.2)
     nested_form (0.3.2)
-    nokogiri (1.6.6.2)
-      mini_portile (~> 0.6.0)
+    nokogiri (1.11.4)
+      mini_portile2 (~> 2.5.0)
+      racc (~> 1.4)
     quiet_assets (1.1.0)
       railties (>= 3.1, < 5.0)
+    racc (1.5.2)
     rack (1.5.2)
     rack-contrib (1.2.0)
       rack (>= 0.9.1)