diff --git a/Gemfile.lock b/Gemfile.lock
index 6522c90..98f45a1 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -5,10 +5,12 @@ GEM
       ffi (~> 1.0, >= 1.0.11)
     ffi (1.9.8)
     headless (2.1.0)
-    mini_portile (0.6.2)
+    mini_portile2 (2.5.1)
     multi_json (1.11.0)
-    nokogiri (1.6.6.2)
-      mini_portile (~> 0.6.0)
+    nokogiri (1.11.4)
+      mini_portile2 (~> 2.5.0)
+      racc (~> 1.4)
+    racc (1.5.2)
     rubyzip (1.1.7)
     selenium-webdriver (2.46.2)
       childprocess (~> 0.5)