diff --git a/Gemfile.lock b/Gemfile.lock
index 4c248da3..1c3caa41 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -173,7 +173,7 @@ GEM
     mime-types (3.1)
       mime-types-data (~> 3.2015)
     mime-types-data (3.2016.0521)
-    mini_portile2 (2.3.0)
+    mini_portile2 (2.8.0)
     minitest (5.11.3)
     multi_json (1.13.1)
     multi_xml (0.6.0)
@@ -191,8 +191,9 @@ GEM
     net-http-persistent (3.0.0)
       connection_pool (~> 2.2)
     netrc (0.11.0)
-    nokogiri (1.8.2)
-      mini_portile2 (~> 2.3.0)
+    nokogiri (1.13.9)
+      mini_portile2 (~> 2.8.0)
+      racc (~> 1.4)
     nokogumbo (1.5.0)
       nokogiri
     notiffany (0.1.1)
@@ -211,6 +212,7 @@ GEM
     public_suffix (3.0.2)
     pygments.rb (1.2.1)
       multi_json (>= 1.0.0)
+    racc (1.6.0)
     rack (2.0.4)
     rainbow (3.0.0)
     rainpress (1.0.1)