diff --git a/Gemfile b/Gemfile
old mode 100755
new mode 100644
index 0f298f1..15bcef4
--- a/Gemfile
+++ b/Gemfile
@@ -55,3 +55,5 @@ group :development, :test do
   gem "faker"
   gem "dotenv-rails"
 end
+
+gem "nokogiri", ">= 1.6.7.1"
diff --git a/Gemfile.lock b/Gemfile.lock
old mode 100755
new mode 100644
index edd3f6c..2552558
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -125,11 +125,11 @@ GEM
       mime-types (>= 1.16, < 3)
     method_source (0.8.2)
     mime-types (2.99)
-    mini_portile (0.6.2)
+    mini_portile2 (2.0.0)
     minitest (5.8.3)
     multi_json (1.11.2)
-    nokogiri (1.6.6.4)
-      mini_portile (~> 0.6.0)
+    nokogiri (1.6.7.1)
+      mini_portile2 (~> 2.0.0.rc2)
     parser (2.2.3.0)
       ast (>= 1.1, < 3.0)
     pg (0.18.4)
@@ -282,6 +282,7 @@ DEPENDENCIES
   jbuilder (~> 2.0)
   jquery-rails
   kramdown
+  nokogiri (>= 1.6.7.1)
   pg
   pry-byebug
   pry-rails