diff --git a/slate/Gemfile b/slate/Gemfile
old mode 100755
new mode 100644
index 2473f4e..a8f6d2d
--- a/slate/Gemfile
+++ b/slate/Gemfile
@@ -9,4 +9,4 @@ gem 'middleman-sprockets', '~> 4.1.0'
 gem 'middleman-livereload', '~> 3.4.6'
 gem 'rouge', '~> 2.0.5'
 gem 'redcarpet', '~> 3.4.0'
-gem 'nokogiri', '~> 1.8.2'
+gem 'nokogiri', '~> 1.13.4'
diff --git a/slate/Gemfile.lock b/slate/Gemfile.lock
index 3ba94db..4d2ffc1 100644
--- a/slate/Gemfile.lock
+++ b/slate/Gemfile.lock
@@ -89,10 +89,11 @@ GEM
     middleman-syntax (3.0.0)
       middleman-core (>= 3.2)
       rouge (~> 2.0)
-    mini_portile2 (2.3.0)
+    mini_portile2 (2.8.0)
     minitest (5.10.1)
-    nokogiri (1.8.2)
-      mini_portile2 (~> 2.3.0)
+    nokogiri (1.13.4)
+      mini_portile2 (~> 2.8.0)
+      racc (~> 1.4)
     padrino-helpers (0.13.3.3)
       i18n (~> 0.6, >= 0.6.7)
       padrino-support (= 0.13.3.3)
@@ -101,6 +102,7 @@ GEM
       activesupport (>= 3.1)
     parallel (1.10.0)
     public_suffix (2.0.5)
+    racc (1.6.0)
     rack (2.0.5)
     rack-livereload (0.3.17)
       rack
@@ -132,7 +134,7 @@ DEPENDENCIES
   middleman-livereload (~> 3.4.6)
   middleman-sprockets (~> 4.1.0)
   middleman-syntax (~> 3.0.0)
-  nokogiri (~> 1.8.2)
+  nokogiri (~> 1.13.4)
   redcarpet (~> 3.4.0)
   rouge (~> 2.0.5)